Safety compass

Details Safety compass Safety compass

1998-10-02

2000-01-11

Holtje, Martie K.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Guide

D19 35, 1906

Patent

active

D04188683

REFERENCES:
patent: 1972759 (1934-09-01), Burnette
patent: 1984467 (1934-12-01), Des Roberts
patent: 2065472 (1936-12-01), Langsner et al.
patent: 2112179 (1938-03-01), Sharrat
patent: 2531248 (1950-11-01), Belch
patent: 3045350 (1962-07-01), Spicacci
patent: 3247597 (1966-04-01), Brown
patent: 3358371 (1967-12-01), Liesong, Sr.
patent: 3797119 (1974-03-01), McDow

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