United States Patent 2733754
US Patent References:
/D112691.html
- - D112691

Rolling crutch
- - 2278901

Wheel structure
- - 2282589

Invalid walker
- - 2374182

Collapsible wheel chair
- - 2486015


Publication Date:
02/07/1956
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Primary Class:
Other Classes:
297/44, 482/67, 297/42, 297/5, 297/488, 297/DIG.004
International Classes:
A47D13/04; A61H3/04; A47D13/00; A61H3/00
Foreign References:
CA477747A
FR960203A