IP Library › Granted Patent US 4,228,691
Granted Patent Utility
US 4,228,691 · App. 05/773,358

Variable pulley transmission

Inventor: Richard L. Smirl
Patented Case View Patent ↗
Granted: Oct 21, 1980 Filed: Mar 1, 1977
Inventor
Richard L. Smirl
Assignee (at issue)
BorgWarner Inc.

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Quick Facts
Patent No.
US 4,228,691
App. No.
05/773,358
Filed
1977-03-01
Granted
1980-10-21
Kind
A