Dual pocket mailing envelope blank

Details Dual pocket mailing envelope blank Dual pocket mailing envelope blank

1977-02-28

1979-03-13

Stearman, Joel

Office supplies; artists and teachers materials

Paper or pasteboard for writing or printing

Envelope

D1901

Patent

active

D02513005

REFERENCES:
patent: 1821011 (1931-09-01), Greenlaw
patent: 2200099 (1940-05-01), Prentice
patent: 2887327 (1959-05-01), Tucker
patent: 3570752 (1971-03-01), Sczesniak
patent: 3648923 (1972-03-01), Young

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