Chronograph

Details Chronograph Chronograph

1981-04-06

1983-08-23

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Watch, wristwatch or case

D10 32, D10 39, D1002

Patent

active

D02702436

REFERENCES:
patent: D238660 (1976-02-01), Ruefli
Merchandising-9/78-p. 75-Stopwatch at center left.
European Jeweler-5/72-p. 96-Chronograph at bottom.
American Express Brochure-5/12/77-"The Black Watch".TM. on cover.
Jeweler's Circular-Keystone-7/78-p. 252-Chronograph at top-center.
International Design Registration #60828-4/11/75-Porsche Design Watch.
International Design Registration #57595-12/6/73-Porsche Design Watch.

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