1
Eugene P Gerety, Jitender K Vij: Device interface controller for intercepting communication between a microcomputer and peripheral devices to control data transfers. ITT Corporation, Walter J Baum, Robert A Walsh, Thomas N Twomey, April 11, 1989: US04821180 (69 worldwide citation)

An apparatus for use with a DMA controller includes a device interface controller having therein both general and specific command programs, and device bus interface. The apparatus is arranged to intercept all communication signals between the DMA controller and a microcomputer associated therewith.


2
Kurt Friedrich, Georg Straimer: Reflection type contactless touch switch having housing with light entrance and exit apertures opposite and facing. International Standard Electric Corporation New York NY, C Cornell Remsen Jr, Walter J Baum, Percy P Lantzy, Philip M Bolton, Isidore Togut, Charles L Johnson Jr, November 16, 1971: US3621268 (47 worldwide citation)

Contactless touch switch in which an electric pulse is produced by light impinging on a photosensitive cell due to reflection of a beam of light. According to the invention the touch switch is constructed in such a manner that the beam of light normally emerges through an aperture in the touch switc ...


3
Murray Weinberg, Irving A Krause: Phase locked loop. International Telephone and Telegraph Corporation Nutley, C Cornell Remsen Jr, Walter J Baum, Paul W Hemminger, Percy P Lantzy, Philip M Bolton, Isidore Togut, Charles L Johnson Jr, August 8, 1972: US3683279 (15 worldwide citation)

An oscillator in a spacecraft transponder or repeater is frequency stabilized by a phase locked loop with reference signal therefor having a frequency (N/M) F being received in the repeater from a ground station. The reference signal is processed in the repeater and returned to the ground station wh ...


4
Robert A Felsenheld: Multi-band tunable halfwave whip antenna. International Telephone and Telegraph Corporation Nutley, C Cornell Remsen Jr, Walter J Baum, Paul W Hemminger, Charles L Johnson Jr, Philip M Bolton, Isidore Togut, Edward Goldberg, Menotti J Lombardi Jr, September 5, 1972: US3689928 (13 worldwide citation)

A physically shortened halfwave antenna of the whip type is disclosed. The antenna includes a main antenna rod, a pair of helices, one helix coupled to each end of the rod, and a capacitive top load coupled to the upper one of the helices. An RF terminal is inductively coupled to the lower one of th ...


5
Arnold Albert Schellenberg: Arrangement to supervise the operation of coder and decoder circuits in a pcm-tdm system. International Standard Electric Corporation New York NY, C Cornell Remsen Jr, Walter J Baum, Paul W Hemminger, Percy P Lantzy, Philip M Bolton, Isidore Togut, Charles L Johnson Jr, August 8, 1972: US3683115 (12 worldwide citation)

The coder and decoder of a terminal are placed in a closed loop excluded from the normal transmission lines during sync time and/or signalling time. During this time a low frequency test signal is applied to the coder and a comparison circuit. By gate means the output of the coder is directly couple ...


6
Richard G S Plumb: Laser manufacture. ITT Corporation, Walter J Baum, Peter A Abruzzese, Robert A Walsh, May 16, 1989: US04830986 (11 worldwide citation)

A ridge waveguide laser structure is manufactured by a method including providing a photoresist stripe (8) on an exposed area of a p cap layer (4) of a multilayer laser wafer; etching channels (9) through the cap layer (4) and a p passive layer (3) using the stripe (8) and an oxide layer window (FIG ...


7
Edouard Pinede Guelph, Abraham De Kam Guelph: System for party line signalling using re-encoded ringing signals. International Standard Electric Corporation New York NY, C Cornell Remsen Jr, Walter J Baum, Paul W Hemminger, Charles L Johnson Jr, James B Raden, Delbert P Warner, Marvin M Chaban, September 5, 1972: US3689705 (11 worldwide citation)

A telephone party line signalling system which employs an electronic monitor circuit at the output end of a central office switching circuit to detect the code of any coded ringing signal emanating from the office. Responsive to this code, the monitor circuit stores and re-encodes these signals into ...


8
Robert M Scarlett: High frequency transistor structure having an impedance transforming network incorporated on the semiconductor chip. International Telephone and Telegraph Corporation Nutley, C Cornell Remsen Jr, Walter J Baum, Paul W Hemminger, Percy P Lantzy, Philip M Bolton, Isidore Togut, Charles L Johnson Jr, June 20, 1972: US3671793 (10 worldwide citation)

This is a semiconductor component having an active semiconductor device formed within a substrate, and an impedance transforming network incorporated on said substrate and coupled to said device so as to reduce the effect of the device lead inductance which is common to both a circuit input and outp ...


9
Eugene P Gerety, Jitender K Vij: Device interface controller having device specific and device common instructions separately stored. ITT Corporation, Peter A Abruzzese, Walter J Baum, January 24, 1989: US04800523 (9 worldwide citation)

An apparatus for controlling a plurality of peripherals attached to a common high speed parallel bus, includes a first program therein, which program includes a fixed set of generalized command and control instructions and a device specific program therein, which device specific program includes com ...


10
Clayton L Waltermire: Fast warm-up indirectly heated cathode structure. International Telephone and Telegraph Corporation Nutley, C Cornell Remsen Jr, Walter J Baum, Paul W Hemminger, Percy P Lantzy, Philip M Bolton, Isidore Togut, Charles L Johnson Jr, June 20, 1972: US3671792 (8 worldwide citation)

A tungsten heater, covered with a thin alumina layer (about 1 mil), is potted inside a molybdenum cathode cup in a sintered mass formed from a mixture of fine particles (of the order of 1-5 microns) of molybdenum and nickel in the weight ratio of at least 40 percent molybdenum, but preferably about ...