ADJUSTABLE DOOR FRAME
United States Patent 3491487
US Patent References:
Reversible casement frame
- - 1806467

Window frame
- - 1877977

Window construction
- - 2929446


Inventors:
Cherno, Philip R.
Publication Date:
01/27/1970
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Assignee:
Philip, Cherno R.
Primary Class:
49/504
International Classes:
E06B1/04; E06B1/06




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