Watch case back

Details Watch case back Watch case back

1987-04-27

1990-08-28

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Dial, indicator hand, or other element or attachment

Watch or clock element, or attachment

Patent

active

D03101819

REFERENCES:
patent: D26922 (1897-04-01), Smith
patent: 353961 (1886-12-01), O'Hara
patent: 953527 (1910-03-01), Greenberg
patent: 2194452 (1940-03-01), Taiebaud

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