1
Adams Charles W, Behrens Herbert R, Pustilnik Jerome M, Gilmore Jr John T: Instinet communication system for effectuating the sale or exchange of fungible properties between subscribers. Institutional Networks Corporation, April 6, 1971: US3573747 (797 worldwide citation)

This disclosure is directed to an apparatus and method of automatically, anonymously and equitably buying and selling fungible properties between subscribers. The specific embodiment described in the disclosure relates to the buying and selling of securities wherein a communication system pursuant t ...


2
Sharp John V, Thompson Donald R: Method and apparatus for increasing image resolution. International Business Machines Corporation, April 6, 1971: US3573789 (123 worldwide citation)

An apparatus and the method embodied therein for increasing the resolution of a data image received and stored in binary form. The method interrogates each data bit with respect to two or more data bits which surround the data bit being interrogated and expands the interrogated data bit into a plura ...


3
Randolph Ellwood A, Baump Paul A: Method and apparatus for testing packaged integrated circuits. AAI Corporation, April 6, 1971: US3573617 (91 worldwide citation)

A test apparatus is disclosed for testing a dual in-line packaged integrated circuit having dual rows of leads protruding laterally in respectively opposite directions from the package and bent normal thereto in a common direction. The test apparatus has a test head with dual rows of oppositely pair ...


4
Scuitto Thomas J, Newby William B: Bi-directional card reading system. Wyle Laboratories, April 6, 1971: US3573437 (85 worldwide citation)

A system for use in conjunction with a digital calculator for reading program cards or other indicia bearing records. The system includes a transport mechanism capable of selectively moving a card in opposite directions. Data on the card defines a sequence of calculator instructions. Reading means s ...


5
Ajioka James S: Broadband multimode horn antenna. Hughes Aircraft Company, April 6, 1971: US3573838 (82 worldwide citation)

The apparatus of the present invention provides a horn antenna capable of generating a pattern with rotational symmetry and polarization purity over a broadband of frequencies with comparatively low side lobes. In achieving this operation, a first mode which propagates as a 'slow wave' is launched t ...


6
Detar Donald R: Connector with provision for minimizing electromagnetic interference. Litton Systems, April 6, 1971: US3573677 (72 worldwide citation)

An electrical connector provided with shielding and filtering of the contacts to suppress electromagnetic interference, i.e., leakage into or radiation of energy from the connector and conduction of undesired high-frequency current through the connector contacts. In the illustrative embodiment, the ...


7
Reed Donald E: Universal display panel. THE United States of America represented by the Secretary of the Navy, April 6, 1971: US3573792 (57 worldwide citation)

A programmable, lighted display panel device is disclosed comprising a trlucent panel, individual areas of which can be back-lighted according to programmed circuitry including stepping switch means responsive alternatively to pushbutton selection switch means or single step switch means to control ...


8
Cragon Harvey G, Watson William J: Computer memory protection. Texas Instruments Incorporated, April 6, 1971: US3573855 (54 worldwide citation)

A data processing system is provided with a central processing unit with an arithmetic unit which is accessible to and from memory over buffered channels. The system is provided with registers for storage of upper and lower memory bounds for data to be read, data to be written and instructions to be ...


9
Herriot Donald R, Poole Kenneth M, Zacharias Alfred: Pattern generating apparatus. Bell Telephone Laboratories Incorporated, April 6, 1971: US3573849 (52 worldwide citation)

Stored data representative of a pattern or image to be reproduced modulates a writing light beam that is reflected by a rotating mirror structure to scan a photosensitive medium. A coding beam scans a code plate in synchronism with the writing beam to generate a code signal used for controlling modu ...


10
Akers Artie E: Monitoring system. North American Rockwell Corporation, April 6, 1971: US3573817 (52 worldwide citation)

An electronic monitoring system comprising one or more remotely positioned monitoring units has a plurality of different types of sensors for detecting intrusions into the monitored area. Each type of sensor is sensitive to a different phenomenon, and their combined output signals identify an intrud ...