Combined watch and depth gauge for divers

Details Combined watch and depth gauge for divers Combined watch and depth gauge for divers

1990-07-18

1993-02-23

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Watch, wristwatch or case

Combined

D10 38, D10 30

Patent

active

D03334384

REFERENCES:
patent: D286269 (1986-10-01), Matsuo
patent: D299463 (1989-01-01), Hermann
patent: 4352168 (1982-09-01), Anderson
patent: 4466285 (1984-08-01), Aclemano
patent: 4611923 (1986-09-01), Kawahara

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