Envelope blank

Details Envelope blank Envelope blank

1984-01-23

1986-09-02

Ansher, Bernard

Office supplies; artists and teachers materials

Paper or pasteboard for writing or printing

Envelope

Patent

active

D02854546

REFERENCES:
patent: D238574 (1976-01-01), Watson
patent: D263315 (1982-03-01), Petersson
patent: 1821011 (1931-09-01), Greenlaw
patent: 2983431 (1961-05-01), Turan
patent: 3863836 (1975-02-01), Austin
patent: 3874582 (1975-04-01), Wang
patent: 3979051 (1976-09-01), Close
patent: 4186868 (1980-02-01), Coleman

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