Closure for ventilators
United States Patent 2755728
US Patent References:
/0249050.html
- - 0249050
/0313844.html
- - 0313844
/0684610.html
- - 0684610
Metal window
- - 1900177
Plastic frame for screens, ventilators, and windows
- - 2316526
/0249050.html
- - 0249050
/0313844.html
- - 0313844
/0684610.html
- - 0684610
Metal window
- - 1900177
Plastic frame for screens, ventilators, and windows
- - 2316526
Inventors:
Frisby, Raymond A.
Publication Date:
07/24/1956
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Assignee:
Frisby, Raymond A.
Primary Class:
Other Classes:
454/260, 49/463, 160/106
International Classes:
E04D13/152; E04D13/15