Granted Patent
Utility
US 5,201,654 · App. 07/678,798
Dental hose cleaning method and apparatus
Inventors:
Paul Kuehn, Thomas A. Lansing
Patented Case
View Patent ↗
Granted: Apr 13, 1993
Filed: Apr 1, 1991
Inventors
Paul Kuehn
Thomas A. Lansing
Assignee (at issue)
Pinnacle Products Group, Ltd.
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.