IP Library › Granted Patent US 5,608,947
Granted Patent Utility
US 5,608,947 · App. 08/455,076

Floor cleaning apparatus with pre-filter

Inventors: Christopher M. Knowlton, Timothy A. Strickland, Robert J. O'Hara
Patented Case View Patent ↗
Granted: Mar 11, 1997 Filed: May 31, 1995
Inventors
Christopher M. Knowlton
Timothy A. Strickland
Robert J. O'Hara
Assignee (at issue)
Windsor Industries, Inc.

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Quick Facts
Patent No.
US 5,608,947
App. No.
08/455,076
Filed
1995-05-31
Granted
1997-03-11
Kind
A