United States Patent 3543890
Inventors:
Criswell, Donald E.
Publication Date:
12/01/1970
Assignee:
Donald, Criswell E.
Other Classes:
312/316, 312/282, 312/241
International Classes:
A47B3/10; A47B55/00; A47B91/02; E06B3/38; A47B3/00; A47B91/00; E06B3/32; A45F4/00