Watch crown

Details Watch crown Watch crown

1987-10-19

1991-02-26

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Dial, indicator hand, or other element or attachment

Watch or clock element, or attachment

Patent

active

D03149285

REFERENCES:
patent: D25696 (1896-06-01), Richardson
patent: D56789 (1920-12-01), Wadsworth
patent: 298396 (1884-05-01), O'Hara
patent: 338947 (1886-03-01), Fitzgerald
patent: 364106 (1887-05-01), Hart
patent: 1600590 (1926-09-01), Jeffords

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