U.S. patent number D275,009 [Application Number 06/357,857] was granted by the patent office on 1984-08-07 for keyboard-equipped arithmetic operation control machine for electronic computers. This patent grant is currently assigned to Tokyo Shibaura Denki Kabushiki Kaisha. Invention is credited to Mikio Shibata.
United States Patent | D275,009 |
Shibata | August 7, 1984 |
Inventors: | Shibata; Mikio (Yokohama, JP) |
---|---|
Assignee: | Tokyo Shibaura Denki Kabushiki
Kaisha (JP) |
Appl. No.: | 06/357,857 |
Filed: | March 15, 1982 |
Sep 19, 1981 [JP] | 56-41250 | |||
Current U.S. Class: | D14/334; D18/7 |
Field of Search: | ;D14/100-117 ;D18/7,12 ;340/365R,700,711 ;364/708,709 |
D253947 | January 1980 | Bellini |
D257146 | September 1980 | Valestin |
SORD M23 shown in Catalogue of SORD Handy Business Computer M20/23; issued on Aug. 20, 1981. . Catalogue of Fujitsu Micro 8; issued in Jul., 1981, Fujitsu Limited. . PC-8001 shown in Catalogue of NEC Personal Computer PC-8000 Series, issued in Aug., 1981. . ATARI 800; "ASCII", Jan., 1980, pp. 121-123. . TI-99/4 of Texas Instruments, Inc. "ASCII", Mar., 1980, pp. 121-123. . BUBCOM 80 of Systems Formulate Co., Ltd.; "ASCII", Aug., 1981. . TRS-80 Model 1 of Tandy; "ASCII", Aug., 1981. . SORD M23 of SORD Computer Systems Co., Ltd. "ASCII", Aug., 1981. . VIC-1001 of Commodore Japan Limited; "ASCII", Aug., 1981. . MB-6890 of Hitachi Sales Corporation; "ASCII", Aug., 1981. . SORD M23 of SORD Computer Systems Co., Ltd. in Catalogue of SORD M20/23. . IBM Personal Computer; "ASCII", Oct., 1981, p. 145; although the magazine mentions Oct., 1981 as its month of issue which is after the priority date of the basic Japanese application, it is stated in the article On Aug. 12, 1981, IBM Corporation has announced a new type of personal computer. The inventor of this U.S. application knew this announcement before filing of the Japanese application. . IBM Personal Computer; Electronic News, Aug. 17, 1981. . IBM Personal Computer; "ASCII", Dec., 1981. . Swedish Des. Gazette, M ans nr 79-1577 Designers: Takashi Hirata et al., Proprietor: Canon, Inc. . U.S. Des. Pat. No. 247,239 Gazette, Feb. 14, 1978 Title of the Article: Keyboard Inventors: Charles Paul Baechtle et al.. |
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