IP Library › Granted Patent US 4,336,671
Granted Patent Utility
US 4,336,671 · App. 06/143,731

Surface cleaning apparatus

Inventor: Robert T. Nelson
Patented Case View Patent ↗
Granted: Jun 29, 1982 Filed: Apr 25, 1980
Inventor
Robert T. Nelson

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Quick Facts
Patent No.
US 4,336,671
App. No.
06/143,731
Filed
1980-04-25
Granted
1982-06-29
Kind
A