IP Library › Granted Patent US 4,914,780
Granted Patent Utility
US 4,914,780 · App. 07/227,191

Compound counterbalance and winding systems with zero torque spirals

Inventors: Tracy G. Rogers, Michael R. Nier
Patented Case View Patent ↗
Granted: Apr 10, 1990 Filed: Aug 2, 1988
Inventors
Tracy G. Rogers
Michael R. Nier
Assignee (at issue)
Schlegel Corporation

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Quick Facts
Patent No.
US 4,914,780
App. No.
07/227,191
Filed
1988-08-02
Granted
1990-04-10
Kind
A