Watch crystal

Details Watch crystal Watch crystal

1998-01-21

1999-02-09

Holte, Nelson C.

Measuring, testing, or signalling instruments

Dial, indicator hand, or other element or attachment

Watch or clock element, or attachment

1003

Patent

active

D04053796

REFERENCES:
patent: D142230 (1945-08-01), Saks
patent: 1731712 (1929-10-01), Davis
patent: 2604418 (1952-07-01), Stern
patent: 4942755 (1990-07-01), Gogniat

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