Granted Patent
Utility
US 4,334,337 · App. 06/134,776
Compact wet-dry electric vacuum cleaner
Inventors:
Jonathan Miller, Richard M. Fegan, Robert C. Berfield, Kenneth R. Hiester, Rudolph W. Wacek
Patented Case
View Patent ↗
Granted: Jun 15, 1982
Filed: Mar 28, 1980
Inventors
Jonathan Miller
Richard M. Fegan
Robert C. Berfield
Kenneth R. Hiester
Rudolph W. Wacek
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.