Transparent envelope

Details Transparent envelope Transparent envelope

1982-07-06

1985-08-06

Ansher, Bernard

Office supplies; artists and teachers materials

Paper or pasteboard for writing or printing

Envelope

Patent

active

D02799901

REFERENCES:
patent: D131145 (1942-01-01), Jewell, Jr.
patent: 1110286 (1914-09-01), Brown
patent: 2689079 (1954-09-01), Timer
patent: 2741572 (1956-04-01), Lennartz
patent: 2781162 (1957-02-01), Soffa
patent: 3164317 (1965-01-01), Bogen
patent: 3627195 (1971-12-01), Haver
patent: 3743173 (1973-07-01), Lasker

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