Telescopic structure
United States Patent 2675256
US Patent References:
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Inventors:
Cornell, James S.
Publication Date:
04/13/1954
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Assignee:
Cornell, James S.
Primary Class:
403/379.200
Other Classes:
248/354.500, 248/357, 248/188.500
International Classes:
E04H12/18; E04H12/00
US Patent References:
0930406
1047532
1151916
1289867
1311918
1801014Tent frame
1820950Adjustable prop
2238463Fastening device, particularly rivets
2354806Extensible assembly
2376716Telescopic structure
2522394Tubular structure