IP Library › Granted Patent US 5,111,569
Granted Patent Utility
US 5,111,569 · App. 07/677,780

Method of locking an impeller bar against a seat

Inventor: David A. Ostergaard
Patented Case View Patent ↗
Granted: May 12, 1992 Filed: Mar 29, 1991
Inventor
David A. Ostergaard
Assignee (at issue)
Cedarapids, Inc.

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Quick Facts
Patent No.
US 5,111,569
App. No.
07/677,780
Filed
1991-03-29
Granted
1992-05-12
Kind
A