Title:
Method and apparatus for sealing cartons by suction
United States Patent 2419991

Inventors:
Dunning, Robert M.
Publication Date:
05/06/1947
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Assignee:
WALDORF PAPER PROD CO
Primary Class:
53/491
Other Classes:
53/376.500, 53/377.200, 221/32
International Classes:
B29C65/00; B65B51/20
Other References:
None