Title:
Remailable billing envelopes
United States Patent 2931559
US Patent References:
/0041804.html
- - 0041804

/1201419.html
- - 1201419

Dry-sealing envelope
- - 2196461

Envelope
- - 2317335

Envelope
- - 2527925


Inventors:
Hilliard, David P.
Publication Date:
04/05/1960
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Assignee:
ENVO BILL CORP
Primary Class:
229/306
Other Classes:
235/63H, 462/65
International Classes:
B42D15/08; B65D27/06
Foreign References:
GB505518A