Multiple fabrication method and apparatus for liquid-tight envelope bags
United States Patent 2444685
US Patent References:
Cigar cellophane-envelope end-crimping device
- - 1948570
Machine for manufacturing bags
- - 2125758
Apparatus for forming bags
- - 2195583
Method of making envelopes without side flaps
- - 2224513
Method of making bags
- - 2265075
Cigar cellophane-envelope end-crimping device
- - 1948570
Machine for manufacturing bags
- - 2125758
Apparatus for forming bags
- - 2195583
Method of making envelopes without side flaps
- - 2224513
Method of making bags
- - 2265075
Inventors:
Waters, Harry F.
Publication Date:
07/06/1948
View Patent Images:
Export Citation:
Assignee:
Waters, Harry F.
Primary Class:
Other Classes:
383/37, 156/292, 493/248, 156/260, 156/308.400, 156/271, 156/516, 156/466, 383/108, 493/209
International Classes:
B31B23/00
US Patent References: