1
Gregory A Pascucci, Ramesh Krishnaiyer, Donald Floyd Pridemore: Control system employing a programmable multiple channel controller for transmitting control signals over electrical power lines. Johnson Controls, Emrich Root O Keeffe & Lee, November 29, 1977: US04060735 (124 worldwide citation)

A control system including a programmable multiple channel digital controller which is operable to generate control signals which are transmitted over electrical power lines of a building complex for enabling receivers associated with functional devices for controlling the operation of functional de ...


2
James E Batz: Frequency/space diversity data transmission system. Northern Illinois Gas Company, Emrich Root O Keeffe & Lee, March 28, 1978: US04081748 (102 worldwide citation)

A frequency/space diversity data transmission system includes a transmitter for transmitting two or more distinct RF signals having the same modulation from different antennas separated a wavelength or more, the frequency spacing of the carrier signals being at least ten times greater than the frequ ...


3
Richard W Kritzer: Respirators. Emrich Root O Keeffe & Lee, October 18, 1977: US04054134 (98 worldwide citation)

A respirator through which a person may breath, and which vibrates the air during inhalation and exhalation in such a manner as to vibrate the cilia in the lungs of the person breathing through the respirator.


4
Lanny Louis Lewyn, Glen David Simpson: Cardiac pacer system and method with capture verification signal. American Hospital Supply Corporation, Emrich Root O Keeffe & Lee, September 19, 1978: US04114627 (86 worldwide citation)

A cardiac pacer system includes a pulse generator for generating a stimulating signal coupled through an output coupling capacitor to a single heart-engaging electrode. An amplifier is coupled to the electrode for sensing an R wave. Immediately upon initiation of the stimulating pulse, a discharging ...


5
Richard W Kritzer: Respirators. Emrich Root O Keeffe & Lee, December 13, 1977: US04062358 (80 worldwide citation)

A respirator through which a person may breath air or a mixture of air and oxygen, and which vibrates the material passing through the respirator during inhalation and exhalation in such a manner as to vibrate the cilia in the lungs of the person breathing through the respirator.


6
David E Kramer: Covers for electrical receptacles. Daniel Woodhead, Emrich Root O Keeffe & Lee, April 15, 1980: US04197959 (70 worldwide citation)

A cover for electrical receptacles having a passageway therethrough for receiving such a receptacle, and having a pivotally mounted closure member spring urged toward overlying closed position relative to the passageway; a flexible flange extending around the passageway for sealingly engaging the co ...


7
Donald E Etes, James D Finch: Plastic composition and method. Northern Illinois Research, Emrich Root O Keeffe & Lee, March 14, 1978: US04078568 (59 worldwide citation)

A plastic composition prepared by the reaction of a non-ionic water soluble acrylic polyelectrolyte and a cationic water soluble acrylic polyelectrolyte with propylene glycol and incorporating or conducting the reaction in the presence of polyvinyl pyrrolidone with or without water. In one embodimen ...


8
Dewey I Doyle Jr: Vacuum cleaners. Doyle Vacuum Cleaner Company, Emrich Root O Keeffe & Lee, February 7, 1978: US04072483 (53 worldwide citation)

A vacuum cleaner for picking up asbestos fibers, and the like, embodying a plurality of filters for affording a "fail-safe" type of protection against the discharge of accumulated materials from the cleaner, and in which the primary filter comprises a bag in which the picked-up material may be colle ...


9
Leif Blodee, Robert L Knapp, Simon W Oppenhuizen: Panel wall systems with modular component build-up. American Seating Company, Emrich Root O Keeffe & Lee, November 7, 1978: US04123879 (45 worldwide citation)

An improved panel wall system is disclosed with means for interconnecting the panels in any desired angular relationship while providing a sight barrier through the joint. As many of the panels may be connected as are desired; and they may be placed in any desired configuration. Each panel includes ...


10
Samuel C McCollum: Split core current transformer having an interleaved joint and hinge structure. Sangamo Electric Company, Emrich Root O Keeffe & Lee, September 13, 1977: US04048605 (37 worldwide citation)

A split core current transformer for coupling monitoring apparatus to a current carrying conductor includes a two-piece annular core structure formed by first and second arcuate core assemblies having windings, connectable to the monitoring apparatus, wound on laminated core sections, the laminated ...