U.S. patent number D302,273 [Application Number 07/170,978] was granted by the patent office on 1989-07-18 for public pay telephone set. This patent grant is currently assigned to Tamura Electric Works, Ltd.. Invention is credited to Kenichi Adachi, Shuichi Tamura.
United States Patent | D302,273 |
Adachi , et al. | July 18, 1989 |
Inventors: | Adachi; Kenichi (Sagamihara, JP), Tamura; Shuichi (Yamato, JP) |
---|---|
Assignee: | Tamura Electric Works, Ltd.
(Tokyo, JP) |
Appl. No.: | 07/170,978 |
Filed: | March 18, 1988 |
Dec 29, 1987 [JP] | 62-53591 | |||
Current U.S. Class: | D14/146; D14/151; D14/142 |
Field of Search: | ;D14/55,56,61,63,62 ;379/144,52,432,143,355 |
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3598920 | August 1971 | Fischer et al. |
4727567 | February 1988 | Angelini |
0251238 | Jan 1988 | EP | |||
1462288 | Jan 1969 | DE | |||
2538978 | Jul 1984 | FR | |||
2575016 | Jun 1986 | FR | |||
2136617A | Sep 1984 | GB | |||
Telephony, 1/16/84, p. 107; Anritsu Magnetic-Card Telephone. . Telephony, 12/2/85, at p. 53: Card Phone ITT, Phillips & Brooks, Inc. Telcom Division. . Telephony, 9/28/87: Landis & Gyr Coin Phone at p. 128. . PGSE Off. Telecommun. J (G.B.), vol. 31, No. 3 (Autumn 1979) pp. 4-6; Micro-Processor-Controlled Payphone.. |
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