Granted Patent
Utility
US 6,637,068 · App. 09/949,216
Float rod seal for vacuum cleaner
Inventors:
Robert L. Crevling, Jr., Mark E. Baer
Patented Case
View Patent ↗
Granted: Oct 28, 2003
Filed: Sep 7, 2001
Inventors
Robert L. Crevling, Jr.
Mark E. Baer
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.