1
Banko Anton: Ultrasonic surgical instrument. Surgical Design, Darby & Darby, April 23, 1974: US3805787 (210 worldwide citation)

Surgical instrument using ultrasonic energy which are to operate upon tissue including arrangements for shielding ultrasonic transducer probe to prevent energy from being radiated into unwanted areas which also include provisions for applying irrigation fluid and/or suction pressure to desired locat ...


2
Schoot Cornelis Johannes, Ponjee Johannes Jacobus: Image display apparatus. US Philips Corporation, Spain Norman N, Trifari Frank R, April 23, 1974: US3806229 (196 worldwide citation)

The invention relates to an image display apparatus provided with at least two electrodes to which a direct voltage or a square-wave or alternating voltage may be applied. The electrodes are in contact with a solution of a reversible reducible organic substance of the formula I and an adjuvant. Suit ...


3
Forbes F Douglas: Phantom subscriber. Hughes Aircraft Company, Dennison Don O, MacAllister W H, April 23, 1974: US3806814 (149 worldwide citation)

A system for enabling a plurality of first circuits to selectively control such functions as gain, slope, bandpass and switching of all transmissions passing through a signal distribution network between a central station and a plurality of subscriber stations. In one embodiment a plurality of secon ...


4
Ehrat Kurt: Identification system for individuals. Gretag Aktiengesellschaft, Pierce Schleffler & Parker, April 23, 1974: US3806874 (147 worldwide citation)

The identification unit described in this specification comprises a testing station for identifying each of a plurality of identification units adapted to be carried or worn by authorized personnel. Each unit has data stored therein which is different from the data stored in other units and includes ...


5
Bove Ronald: Probe contactor having buckling beam probes. International Business Machines Corporation, Leach Jr Frank C, Saile George O, April 23, 1974: US3806801 (147 worldwide citation)

A probe contactor has each of its probes formed with a length many times its cross sectional area so that the probes buckle or deflect when a predetermined axial load is applied thereto. This enables the same force to be exerted on each of a plurality of pads on a semiconductor chip regardless of th ...


6
Wright Maynard Lattimer: Amplitude modulation using phased-array antennas. The United States of America represented by the Secretary of the Navy, Sciascia R S, Curry Charles D B, April 23, 1974: US3806931 (144 worldwide citation)

An antenna system for producing an amplitude modulated signal at a receiver y properly varying the spatial amplitude distribution of the antenna beam. The antenna beam variation is accomplished by varying the relative phase of a phase-array antenna at the desired modulation rate. A variable DC bias ...


7
Clarke Alan Bothwell: Security for computer systems. Rosen Lawrence, Berry E Janet, April 23, 1974: US3806882 (129 worldwide citation)

A computer security system and method in which access to information stored in the computer is only made available in response to correct identifying data stored in an electronic key which is coupled to the computer to be identified. The key includes at least one ramdom access permanent memory devic ...


8
Sessions Robert W: Disposable electrode. Hill Sherman Meroni Gross & Simpson, April 23, 1974: US3805769 (120 worldwide citation)

A disposable electrode structure for operatively connecting electrical equipment to the surface of live skin of a patient, employing a self-contained electrical conductive material for affecting the connection, and cover means for protectively sealing said conductive material, readily removable from ...


9
Evans James W: Swing measurement and display system for athletic implements. Athletic Swing Measurement, Duckworth Hobby & Allen, April 23, 1974: US3806131 (113 worldwide citation)

A system and method for measuring at least one element of motion, e.g, torque, of a moving member and visually displaying the element as a series of bars each at a discrete time interval during movement. The slope of each bar is relative to the magnitude of the element during the corresponding time ...


10
Liebig William J: Tubular grafts having indicia thereon. Meadox Medicals, Blum Moscovitz Friedman & Kaplan, April 23, 1974: US3805301 (108 worldwide citation)

Tubular grafts such as vascular grafts which are used in the human body. The graft includes an elongated flexible tubular body having thereon, at its exterior, an elongated line which is visibly distinct from the remainder of the tubular body as by being of a color different from the remainder of th ...