Title:
Roll screen and spring positioning means
Document Type and Number:
United States Patent 3179161

Inventors:
Johnson, Waldo O.
Publication Date:
04/20/1965
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Assignee:
WEATHER SEAL INC
Primary Class:
160/313
International Classes:
E06B9/60; E06B9/56
US Patent References:
0662148
Foreign References:
GB271489A
CA458684A




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