Ring sizer

Details Ring sizer Ring sizer

1996-07-23

1997-10-07

Davis, Antoine Duval

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D10 71, D10 65, 1004

Patent

active

D03845885

REFERENCES:
patent: D5318 (1871-07-01), Harmon
patent: D60612 (1922-03-01), Ford
patent: D281301 (1985-11-01), Spolar
patent: D344029 (1994-02-01), Sullivan
patent: 1282772 (1918-10-01), Dinhofer
patent: 1491444 (1924-04-01), Trahms
patent: 4471634 (1984-09-01), Kaplan
patent: 4785647 (1988-11-01), Coleman
patent: 4964222 (1990-10-01), Keener

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