1
David P Rubincam: Electronic book. Donald A Kettlestrings, June 26, 1979: US04159417 (131 worldwide citation)


The contents of a book, magazine or the like are digitally encoded onto a memory, and the memory is removably insertable into a portable book-like apparatus whereby the encoded information can be displayed on a screen of the apparatus.


2
Vera L Barnes, Thomas J Dodds Jr, Harold F Gibson, Carl M Campbell Jr: Communications line authentication device. Burroughs Corporation, Mark T Starr, June 26, 1979: US04159468 (122 worldwide citation)


A device for insertion in a communications line for verifying message integrity within a significant portion of existing communications networks. At the transmitter end, the device receives plain text messages from the communications line, generates an authentication field by encrypting the plain te ...


3
Dale R Greve, Turner W Richards: Fire door core. Georgia Pacific Corporation, John T Synnestvedt, Kenneth P Synnestvedt, June 26, 1979: US04159302 (111 worldwide citation)


A fire door core in which the major ingredient is expanded perlite and including, as minor ingredients, set gypsum, set hydraulic cement and an organic binder, and having a density of no greater than about 30 lbs. per cubic foot, and preferably including unexpanded vermiculite, clay, and fibrous rei ...


4
Robert Le Salver, Dominique Poupard: Damper device, in particular for the suspension of an engine. Automobiles Peugeot, Burns Doane Swecker & Mathis, June 26, 1979: US04159091 (111 worldwide citation)


The device comprises two armatures one of which is for connection to a support and the other is for connection to a suspended element. A block of elastic material is interposed between, and defines with, the two armatures a closed enclosure. A partition wall provided with at least one calibrated ori ...


5
Milton P Chernack, Armand A Fiorenza: Integral snap action hinge. Hubbell Cohen Stiefel & Gross, June 26, 1979: US04158902 (88 worldwide citation)


An improved integral snap action hinge comprises first and second main parts joined together by a plurality of hinge straps each of which includes a flexible intermediate portion which portions are aligned to define a hinge line which accommodates opening and closing of the hinge. Improved hinge als ...


6
Henry A F Rocha, Charles E Thomas: Ultrasonic multi-sector scanner. General Electric Company, Donald R Campbell, Joseph T Cohen, Marvin Snyder, June 26, 1979: US04159462 (85 worldwide citation)


A steered beam B-scan ultrasonic imaging system has a linear transducer array divisible into multiple sub-arrays of transducer elements each operable to perform a sector scan, with the origin points displaced longitudinally along the array between sector scans. The system performs overlapping sector ...


7
Willard E Kehoe, R Trezevant Wigfall: Portable electronic language translation device. Willard E Kehoe, June 26, 1979: US04159536 (84 worldwide citation)


A portable electronic language translation apparatus including a keyboard for receiving operator entered words in one language and a memory such as a programmable read only memory controlled by a microprocessor for comparing and analyzing each letter or group of letters of the keyboard entered word ...


8
Alfred Dana III: Flashing discoshoes. Disco Enterprises, Cushman Darby & Cushman, June 26, 1979: US04158922 (78 worldwide citation)


A lighted shoe having a solid state oscillator circuit for causing periodic flashing on and off of a light associated with the shoe. A tilt switch may also be associated with the light or lights, and a three-position manual switch provided having one position wherein the light flashes periodically o ...


9
Richard V Worrell: Patellar prosthesis and method of implanting the same. June 26, 1979: US04158894 (73 worldwide citation)


A patellar prosthesis has a hollow body portion providing a convex articulating surface on one side and a mounting chamber on its opposite side which provides a peripheral seating rim. An anchoring stem is attached to the body portion within the mounting recess and extends in a direction outwardly t ...


10
Kenneth R Buser, Milton J Roedel, Eustathios Vassiliou: Simulated granite and its preparation. E I Du Pont de Nemours and Company, June 26, 1979: US04159301 (69 worldwide citation)


A simulated granite and its preparations are provided. The granite comprises (A) about 35 to 95% by volume of a matrix consisting essentially of (1) at least 34% by volume of polymer, preferably predominantly an acrylic polymer, having a refractive index (n.sub.D) between 1.4 and 1.65 and (2) about ...



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