Title:
Crutch
United States Patent 2453632
US Patent References:
/1156747.html
- - 1156747

Crutch
- - 2197279


Inventors:
Lofstrand Jr., Anders R.
Publication Date:
11/09/1948
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Assignee:
Lofstrand Jr., Anders R.
Primary Class:
135/71
Other Classes:
135/69
International Classes:
A61H3/02; A61H3/00
Foreign References:
GB122694A
DE618653C