Title:
Therapeutic traction device
United States Patent 3085768
US Patent References:
Self-winding reel
- - 2673694

Reverse wound spring motor
- - 2833534

Spring motor
- - 2869801

Low gradient springs and spring motors using the same
- - 3033316


Inventors:
Treutelaar, Edward J.
Publication Date:
04/16/1963
View Patent Images:
Assignee:
Treutelaar, Edward J.
Primary Class:
Other Classes:
242/378
International Classes:
A61H1/02