IP Library › Granted Patent US 4,887,989
Granted Patent Utility
US 4,887,989 · App. 07/138,801

Dynamically balanced driveshaft and method of producing the same

Inventor: Norman C. Kerecman
Patented Case View Patent ↗
Granted: Dec 19, 1989 Filed: Dec 28, 1987
Inventor
Norman C. Kerecman
Assignee (at issue)
A. O. Smith Corporation

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Quick Facts
Patent No.
US 4,887,989
App. No.
07/138,801
Filed
1987-12-28
Granted
1989-12-19
Kind
A