Granted Patent
Utility
US 5,735,017 · App. 08/624,242
Compact wet/dry vacuum cleaner with flexible bladder
Inventors:
James Francis Barnes, Michael D. Bartlett, Martin E. Harbeck, Marion C. Johnson
Patented Case
View Patent ↗
Granted: Apr 7, 1998
Filed: Mar 29, 1996
Inventors
James Francis Barnes
Michael D. Bartlett
Martin E. Harbeck
Marion C. Johnson
Assignee (at issue)
BISSELL Inc.
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.