Therapeutic exercise chair
United States Patent 3072400
US Patent References:
/0951560.html
- - 0951560

/1121795.html
- - 1121795

Massaging machine
- - 1929107

Exercising device
- - 2305548

Polio exercising machine
- - 2456017


Inventors:
Dykinga, Donald L.
Publication Date:
01/08/1963
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Assignee:
Dykinga, Donald L.
Primary Class:
601/23
Other Classes:
482/102, 601/24
International Classes:
A61H1/02; A63B23/00; A63B21/00; A63B21/06
US Patent References:
2929375Hand supinator
Foreign References:
DE222515C