Drafting instrument

Details Drafting instrument Drafting instrument

1983-06-06

1986-07-15

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Guide

Patent

active

D02846756

REFERENCES:
patent: D134142 (1942-10-01), Truhorn
patent: D141882 (1945-07-01), Matson
patent: D167432 (1952-08-01), Turner
patent: 411617 (1889-09-01), Rondinella
patent: 699738 (1902-05-01), Zange
patent: 1461335 (1923-07-01), Vosler
patent: 2532329 (1950-12-01), Premo
Dolgorukov Manufacturing Co. Catalog, p. 4, Guide Liner.
Alvin & Co., Inc. Catalog, p. 11, top right of page-Screw Heads Template.
Alvin & Co., Inc. Catalog, p. 34, top center of page, Isometric Ellipse.

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