Title:
Slit seal and multiple tube gusseter
United States Patent 3156010
Inventors:
Osborn Jr., Paul Victor
Publication Date:
11/10/1964
Export Citation:
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Assignee:
NAT DISTILLERS CHEM CORP
Primary Class:
156/515
Other Classes:
493/287
International Classes:
B29C47/00; B29C65/74; B29C69/00; B29C47/00; B29C65/74; B29C69/00
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US Patent References:
2995990Apparatus for the production of gusseted tubing
2961930Gusset former
2805700Machine for forming thermoplastic bag-tubing
Foreign References:
GB816931A