IP Library › Granted Patent US 4,858,271
Granted Patent Utility
US 4,858,271 · App. 07/218,100

Wheel type vacuum cleaner

Inventors: Robert C. Berfield, Ronald F. Meland
Patented Case View Patent ↗
Granted: Aug 22, 1989 Filed: Jul 12, 1988
Inventors
Robert C. Berfield
Ronald F. Meland
Assignee (at issue)
SHOP VAC CORPORATION

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Quick Facts
Patent No.
US 4,858,271
App. No.
07/218,100
Filed
1988-07-12
Granted
1989-08-22
Kind
A