Louver mechanism for attic ventilation
United States Patent 2464000
Inventors:
Schild, August W.
Publication Date:
03/08/1949
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Export Citation:
Assignee:
Schild, August W.
Primary Class:
Other Classes:
49/92.100, 49/89.100, 454/353
International Classes:
F24F13/15
Foreign References:
| AU1236233A | ||||
| AU2927530A | ||||
| AU101544B |