Attachable adjustable elevating and supporting device
United States Patent 2935813
Inventors:
Berman, Howard I.
Harvey, Davis
Publication Date:
05/10/1960
Assignee:
Berman, Howard I.
Harvey, Davis
Other Classes:
297/463.100, 182/204, 5/11, 5/310
International Classes:
A47B91/02; A47B91/00