Front surface of a stampless envelope

Details Front surface of a stampless envelope Front surface of a stampless envelope

1997-06-12

1999-09-28

Holtje, Martie K.

Office supplies; artists and teachers materials

Paper or pasteboard for writing or printing

Envelope

1901

Patent

active

D04145119

REFERENCES:
patent: D380007 (1997-06-01), Kara
patent: D384098 (1997-09-01), Kara
patent: D386783 (1997-11-01), Kara
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patent: 2804395 (1957-08-01), Boyajian
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patent: 3221980 (1965-12-01), Mercur
patent: 3380648 (1968-04-01), De Lyra
patent: 3986662 (1976-10-01), Luftig
patent: 4245775 (1981-01-01), Conn
patent: 4502713 (1985-03-01), Conti
patent: 4919324 (1990-04-01), Hottle
patent: 5507526 (1996-04-01), Petkovsek

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