Electrooptic timepiece face

Details Electrooptic timepiece face Electrooptic timepiece face

1975-06-06

1976-12-14

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Dial, indicator hand, or other element or attachment

Dial or face plate

D1001

Patent

active

D02426943

REFERENCES:
patent: D178769 (1956-09-01), Doerr
patent: D217003 (1970-03-01), Windebank
patent: D229436 (1973-11-01), Chow
patent: 2745243 (1956-05-01), Schumacher
patent: 2953776 (1960-09-01), Blutman
patent: 3786624 (1974-01-01), Uchiyaama

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