Gymnastic apparatus for mobilizing stiff joints
United States Patent 2387966

Inventors:
Richard, Zander Gustaf
Publication Date:
10/30/1945
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Assignee:
Richard, Zander Gustaf
Primary Class:
482/92
Other Classes:
482/110, 601/33
International Classes:
A63B23/04; A63B21/22; A63B21/00