Title:
Method and machine for making triple wall corrugated paper board
United States Patent 2759523

Inventors:
Samuel, Goldstein
Immanuel, Lichtenstein
Publication Date:
08/21/1956
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Assignee:
CORRO LTD
Primary Class:
Other Classes:
156/207, 493/335, 425/384, 229/5.810, 493/346, 493/403, 156/211, 229/939
International Classes:
B31F1/28; B31F1/20
US Patent References:
2485020Combined cutting and creasing dies for paper slotting machines