Wristwatch calculator

Details Wristwatch calculator Wristwatch calculator

1976-11-12

1978-09-05

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Watch, wristwatch or case

Combined

D1002

Patent

active

D02492431

REFERENCES:
patent: D243751 (1977-03-01), Price
patent: 3803834 (1974-04-01), Reese
patent: 3928960 (1975-12-01), Reese
patent: 3955355 (1976-05-01), Luce
patent: 4022014 (1977-05-01), Lowdenslager
patent: 4041295 (1977-08-01), Ido
Form -- 8/1/76, p. 42, watch-calculator center-left.
Jeweler's Circular-Keystone -- 3/76, p. 58, watch-calculator at top-left.
Office Products -- 8/71, p. 6, calculator.
Home Furnishings Daily -- 2/13/75, p. 28, H.P. calculator at right.

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