Track type drafting machine

Details Track type drafting machine Track type drafting machine

1985-02-15

1987-09-01

Dunkins, Bruce W.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

Patent

active

D02916622

REFERENCES:
patent: D125062 (1941-02-01), Blazey
patent: D134917 (1943-01-01), Eubanks
patent: D137749 (1944-04-01), Murphy
patent: D137973 (1944-05-01), Stovern
patent: D206169 (1966-11-01), Gerber
patent: 2090664 (1937-08-01), Bruno
Frederick Post Catalog, Jan. 28, 1969, p. 12, Drafting Machine.

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