United States Patent 2734601
US Patent References:
/0752831.html
- - 0752831

/0837437.html
- - 0837437

Window
- - 1644223

Double window construction
- - 2125397

Window frame construction
- - 2128870


Publication Date:
02/14/1956
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Primary Class:
52/204.510
Other Classes:
49/DIG.001, 52/717.020, 52/656.600
International Classes:
E06B3/263; E06B3/04
US Patent References:
2131980Window sash and housing
2136273Sheet metal window frame structure and method of forming the same
2249257Casing construction
2280389Window construction
2345643Breather for multiple glass sash
2367610Panel for use in walls, partitions, and the like
2622710Insulated sash frame
Foreign References:
AU2372829A
GB576675A