Combination set protractor

Details Combination set protractor Combination set protractor

1980-12-11

1983-01-11

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D10 65, D1004

Patent

active

D02675501

REFERENCES:
patent: D182773 (1958-05-01), Souter
patent: D220648 (1971-05-01), Provi
patent: D224625 (1972-08-01), Carter
patent: 1523265 (1925-01-01), Hobbs
patent: 2113524 (1938-04-01), Wolfe
patent: 2308373 (1943-01-01), Keegan
patent: 2400014 (1946-05-01), Luzi
patent: 4301600 (1981-11-01), Charnley
Ash Precision Cat. #15-.COPYRGT.1966-p. 107-T-Universal Bevel Protractor.
Starrett Cat. #27-1970-p. 158-Combination Tool.

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