Title:
Insulating unit for curtain wall
United States Patent 3093217
Inventors:
Doede, Donald J.
Publication Date:
06/11/1963
Export Citation:
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Assignee:
MARMET CORP
Primary Class:
52/206
Other Classes:
49/DIG.1, 52/204.591, 52/235, 52/775
International Classes:
E04B2/96; E06B3/263; E04B2/88; E06B3/04
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US Patent References:
2914145Curtain wall framing
2835360Insulated non-heat conducting metal window frame
2205780Cabinet construction
2035476Expansion joint
Foreign References:
GB768499A
GB804258A