Convex spinal frame
United States Patent 2764150
US Patent References:
Operating table
- - 1814482

Hyperextension frame
- - 2152734


Inventors:
Ettinger, Joe J.
Delp, Robert E.
Publication Date:
09/25/1956
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Assignee:
ZIMMER MFG COMPANY
Primary Class:
602/39
Other Classes:
5/630
International Classes:
A61G13/12; A61G13/00