Aeronautical template

Details Aeronautical template Aeronautical template

1985-04-05

1987-11-10

Herrmann, Winifred E.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Guide

D10 64, D19 39, D19 40

Patent

active

D02927160

REFERENCES:
patent: D226450 (1973-03-01), Ajus et al.
patent: 3633286 (1972-01-01), Maurer
patent: 3911584 (1975-10-01), Ajus et al.
Art Brown & Bro., Inc., .COPYRGT.1973, Supplier of Artists' Materials, p. 136, bottom left, Aircraft Engineer Curves.

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