HEAD OR BACK SUPPORT FOR WHEELCHAIRS
United States Patent 3497259
US Patent References:
/0527056.html
- - 0527056

Surgical arm chair
- - 1721221

Convertible wheel chair
- - 2561616


Inventors:
Sherfey, William E.
Publication Date:
02/24/1970
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Assignee:
William, Sherfey E.
Primary Class:
297/391
Other Classes:
297/45, 297/408, 297/DIG.004
International Classes:
A61G5/12; A61G5/00; A47C7/36; A47C4/28




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