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Publication numberUSD275009 S
Publication typeGrant
Application numberUS 06/357,857
Publication dateAug 7, 1984
Filing dateMar 15, 1982
Priority dateSep 19, 1981
Publication number06357857, 357857, US D275009 S, US D275009S, US-S-D275009, USD275009 S, USD275009S
InventorsMikio Shibata
Original AssigneeTokyo Shibaura Denki Kabushiki Kaisha
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Keyboard-equipped arithmetic operation control machine for electronic computers
US D275009 S
Abstract  available in
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  1. The ornamental design for a keyboard-equipped arithmetic operation control machine for electronic computers, substantially as shown and described.

FIG. 1 is a front, top and right side perspective view of a keyboard-equipped arithmetic operation control machine for electronic computers showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof; and

FIG. 6 is a rear elevational view thereof.

Non-Patent Citations
1ATARI 800; "ASCII", Jan., 1980, pp. 121-123.
2BUBCOM 80 of Systems Formulate Co., Ltd.; "ASCII", Aug., 1981.
3Catalogue of Fujitsu Micro 8; issued in Jul., 1981, Fujitsu Limited.
4IBM Personal Computer; "ASCII", Dec., 1981.
5IBM 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.
6IBM Personal Computer; Electronic News, Aug. 17, 1981.
7MB-6890 of Hitachi Sales Corporation; "ASCII", Aug., 1981.
8PC-8001 shown in Catalogue of NEC Personal Computer PC-8000 Series, issued in Aug., 1981.
9SORD M23 of SORD Computer Systems Co., Ltd. "ASCII", Aug., 1981.
10SORD M23 of SORD Computer Systems Co., Ltd. in Catalogue of SORD M20/23.
11SORD M23 shown in Catalogue of SORD Handy Business Computer M20/23; issued on Aug. 20, 1981.
12Swedish Des. Gazette, M ans nr 79-1577 Designers: Takashi Hirata et al., Proprietor: Canon, Inc.
13TI-99/4 of Texas Instruments, Inc. "ASCII", Mar., 1980, pp. 121-123.
14TRS-80 Model 1 of Tandy; "ASCII", Aug., 1981.
15U.S. Des. Pat. No. 247,239 Gazette, Feb. 14, 1978 Title of the Article: Keyboard Inventors: Charles Paul Baechtle et al.
16VIC-1001 of Commodore Japan Limited; "ASCII", Aug., 1981.
U.S. ClassificationD14/334, D18/7