1
Klein Bernard: Methods and compositions for determining glucose in blood. Hoffmann La Roche, April 4, 1972: US3653841 (246 worldwide citation)

Colorimetric methods and compositions for quantitatively determining the glucose content of blood plasma or serum by heating a deproteinized sample of blood plasma or serum with an alkaline ferricyanide solution, followed by the addition of ferric ions and a 5-(2-pyridyl)-2H-1,4-benzodiazepine or wa ...


2
Marks Alvin M: Electro-optical dipolar material. April 4, 1972: US3653741 (208 worldwide citation)

An article of manufacture is provided as a matrix having dispersed substantially uniformly therethrough a plurality of electro-optically responsive dipole particles selected from the group consisting of electrically conductive and semi-conductive material and dichroic crystals, the matrix being a tr ...


3
Berry James M, Corpron Gary P: Electrostatic printing composition comprising didodecyl sebacate. Teletype Corporation, April 4, 1972: US3653932 (197 worldwide citation)

Printing is effected with a hot melt type ink comprised of coloring material and a vehicle therefor and having a resistivity within the range of about 10.sup.6 to about 10.sup.11 ohm-centimeters and a viscosity in a range with an upper limit of about 50 centipoises when in a liquid phase. To that en ...


4
Tenckhoff Heinrich A M: Catheter insertion trocar. Battelle Development Corporation, April 4, 1972: US3653388 (138 worldwide citation)

A trocar for insertion of catheters into a body wall is described. The trocar comprises a bivalved type tapered tip with a handle attached to each portion of the tapered tip, a tubular member adapted to encircle the rearward portion of the tapered tip and a stylet which is adapted to fit inside both ...


5
Wickersham Price D: Coordinate conversion for the testing of printed circuit boards. Brooks Research and Manufacturing, April 4, 1972: US3654585 (118 worldwide citation)

An array of spring pin contact elements are arranged in a matrix on a uniform rectangular grid and, through a coordinate conversion interface, provide access to the random-arranged contact points of a single or multiple layer printed circuit board for the purpose of conducting electrical tests. The ...


6
Yamamoto Mititaka, Nagata Masanori: Automatic vending system. Omron Tateisi Electronics Co, April 4, 1972: US3653480 (111 worldwide citation)

An automatic vending system in which cards having predetermined monetary values accorded thereto are utilized to purchase an article or service. The system comprises, in combination, a card issuance control device, an article dispensation control device and a card-to-cash conversion control device. ...


7
Ceier Richard R: Protector circuit for cardiac apparatus. Cardiac Electronics, April 4, 1972: US3653387 (107 worldwide citation)

A protector circuit having relay arrangement and gas discharge tubes coupled between first electrodes attached to a patient and the amplifier of an electrocardiograph, the relays comprising fast acting reed relays which break the circuit when a defibrillator is energized to apply a countershock volt ...


8
Warnken Crystal E: Belted diapers. April 4, 1972: US3653381 (106 worldwide citation)

A belted diaper comprising a washable fabric of desired shape with an elongated strip of loop type fastening means secured thereto; a removable belt passed through folds of said fabric includes hook type fastening means which are adjustably secured to said loop type fastening means to provide a snug ...


9
Lapidus Roy: Bed pad. April 4, 1972: US3653083 (92 worldwide citation)

An aerated bed pad is described which permits varied positions of comfort for the user. The bed pad comprises a sheet of open foam supported by a perforated, branched plastic tube having a single open end into which a current of air is passed. The air passes out through the perforations then through ...


10
Becker Carl H, Dell Harold R, French Ballard D, Hashiguchi Masao, McFarland Keith E, Wong Herman: Laser recording system using drum mounted record strips. Precision Instrument Company, April 4, 1972: US3654624 (88 worldwide citation)

A laser recording system for scanning a modulated laser beam in spaced parallel lines across a flat elongated strip of energy absorbing material and for ablating minute regions from the material in a linear pattern representing digital bits according to the intensity of the modulating signal. The fl ...