United States Patent 2932511
US Patent References:
Supports - - 2795388
Inventors:
Bemis, Thomas F.
Publication Date:
04/12/1960
Assignee:
Bemis, Thomas F.
Other Classes:
248/156, 52/697, 52/40
International Classes:
A63B63/08; E04H12/24; A63B63/00; E04H12/00