Title:
Envelopes with integral, detachable coupons contained therein
United States Patent 3374940
US Patent References:
/0380616.html
- - 0380616

/1032648.html
- - 1032648

/1139003.html
- - 1139003

/1171703.html
- - 1171703

/2436105.html
- - 2436105


Inventors:
Allison, Robert D.
Publication Date:
03/26/1968
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Primary Class:
229/70
Other Classes:
493/261, 53/460
International Classes:
B42D15/08
US Patent References:
2931559Remailable billing envelopes
3314592Advertising combination
3259299Container
Foreign References:
GB419327A