Calliper

Details Calliper Calliper

1991-11-21

1993-04-13

Douglas, Alan P.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

Patent

active

D03347192

REFERENCES:
patent: D233787 (1974-11-01), Uchino
patent: D235627 (1975-07-01), Uchino
patent: D235628 (1975-07-01), Nishigata
patent: D257009 (1980-09-01), Sibukawa et al.
patent: D280301 (1985-08-01), Nishina et al.
patent: 4229883 (1980-10-01), Kobashi
patent: 5056238 (1991-10-01), Chi
patent: 5102471 (1992-04-01), Sasaki

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