Stampless envelope

Details Stampless envelope Stampless envelope

1994-05-16

1998-06-16

Vinson, Brian N.

Office supplies; artists and teachers materials

Paper or pasteboard for writing or printing

Envelope

1901

Patent

active

D03953335

REFERENCES:
patent: 701839 (1902-06-01), Callahan
patent: 1988908 (1935-01-01), MacKinnon
patent: 2035218 (1936-03-01), Bloom
patent: 2804395 (1957-08-01), Boyajian
patent: 2825498 (1958-03-01), Alves
patent: 2985464 (1961-05-01), McFarland
patent: 3221980 (1965-12-01), Mercur
patent: 3380648 (1968-04-01), DeLyra
patent: 4919324 (1990-04-01), Hottle

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