Document Type and Number:
United States Patent 2716262

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Primary Class:
49/277
Other Classes:
292/DIG.020, 292/240, 292/192
US Patent References:
0676779
0796710
0867574
1263349
2011152Window construction
2548681Fastening
2581816Fastener for butt joints
2664601Window construction
Foreign References:
GB189303039A
GB183719015A
DE196512C




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