Horology: time measuring systems or devices – Astronomical
Patent
1978-02-07
1981-02-24
Weldon, Ulysses
Horology: time measuring systems or devices
Astronomical
368 17, 368 21, 368 22, 368 28, 368 29, G04B 1926
Patent
active
042531691
ABSTRACT:
An electronic watch with circuitry to calculate and display time under the Moslem calendar.
REFERENCES:
patent: 3653204 (1972-04-01), Mina
patent: 3940920 (1976-03-01), Nakamura et al.
patent: 4044545 (1977-08-01), Shimizu
patent: 4072005 (1978-02-01), Teshima et al.
patent: 4133170 (1979-01-01), Kashio
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