Display sheet

Details Display sheet Display sheet

1987-05-29

1990-12-11

Burke, Wallace R.

Office supplies; artists and teachers materials

Book, album or cover

Element or attachment

Patent

active

D03128350

REFERENCES:
patent: 938910 (1909-11-01), Sultzer
patent: 2123903 (1938-07-01), Lane et al.
patent: 2539718 (1951-01-01), Balzak
patent: 3071881 (1963-01-01), Ruterbusch
patent: 3267980 (1966-08-01), Bird
patent: 3651591 (1972-03-01), Woodyard
patent: 3735516 (1973-05-01), Wenstrom
patent: 3921322 (1975-11-01), Sharp
patent: 4065864 (1978-01-01), Stanley
patent: 4500021 (1985-02-01), Bildusas
patent: 4605245 (1986-08-01), Weaver
patent: 4676527 (1987-06-01), Palmer
Myron Manufacturing Corp., Spring, 1971, p. 8, Envelope on left center of page.

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