Venetian blind
United States Patent 2074482

Inventors:
Martens, Ernest J.
Publication Date:
03/23/1937
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Assignee:
Martens, Ernest J.
Primary Class:
160/236
Other Classes:
428/122, 156/65, 428/187, 160/DIG.007, 428/101
International Classes:
E06B9/386; E06B9/38