Tension controlling device for rolling closures
United States Patent 1937209

Inventors:
Clifford, Trant
Publication Date:
11/28/1933
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Assignee:
HIGGIN MFG COMPANY
Primary Class:
160/23.100
Other Classes:
160/315
International Classes:
E06B9/171; E06B9/60; E06B9/17; E06B9/56