Combined measuring and drawing instrument

Details Combined measuring and drawing instrument Combined measuring and drawing instrument

1976-09-10

1978-08-08

Stearman, Joel

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Plural or combined

D10 62, D19 38, D1906

Patent

active

D02488647

REFERENCES:
patent: D192748 (1962-05-01), Brockman
patent: D194242 (1962-12-01), Robbins
patent: D229224 (1973-11-01), Gutowski et al.
patent: 459519 (1891-09-01), Collins
patent: 482409 (1892-09-01), Mildrum
patent: 2505437 (1950-04-01), Skolnick
C-Thru Ruler Co. Cat. .COPYRGT.1967, p. 28, top right.

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