IP Library › Granted Patent US 5,312,224
Granted Patent Utility
US 5,312,224 · App. 08/030,984

Conical logarithmic spiral viscosity pump

Inventors: John S. Batchelder, Shawn A. Hall, Robert R. Jackson
Patented Case View Patent ↗
Granted: May 17, 1994 Filed: Mar 12, 1993
Inventors
John S. Batchelder
Shawn A. Hall
Robert R. Jackson
Assignee (at issue)
International Business Machines Corporation

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Quick Facts
Patent No.
US 5,312,224
App. No.
08/030,984
Filed
1993-03-12
Granted
1994-05-17
Kind
A