Granted Patent
Utility
US 5,918,344 · App. 08/727,318
Self-evacuating vacuum cleaner
Inventors:
Robert L. Crevling, Jr., Craig A. Seasholtz
Patented Case
View Patent ↗
Granted: Jul 6, 1999
Filed: Oct 8, 1996
Inventors
Robert L. Crevling, Jr.
Craig A. Seasholtz
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.