Granted Patent
Utility
US 4,655,694 · App. 06/761,154
Housing assembly for motor/fan means of a wet/dry vacuum cleaner
Inventor:
Robert C. Berfield
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Aug 1, 1985
Inventor
Robert C. Berfield
Assignee (at issue)
SHOP VAC CORPORATION
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.