Combined wristwatch and calculator

Details Combined wristwatch and calculator Combined wristwatch and calculator

1980-02-27

1982-03-16

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Watch, wristwatch or case

Combined

D1002

Patent

active

D02633760

REFERENCES:
patent: D235520 (1975-06-01), Kwon
patent: D249243 (1978-09-01), Salter
patent: 3768247 (1973-10-01), Fujim
Jeweler's Circular-Keystone-3/78 p. 56-Calculator-Watch at left.
Form-8/11/76-p. 42-Watch at center-left.
Jeweler's Circular-Keystone-3/76 p. 58-Calculator-watch.

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