Granted Patent
Utility
US 6,192,542 · App. 09/396,648
Sweeper conveyor overflow and leakage recycling ramp
Inventors:
Sherman B. Frederick, Mark D. Kinter, Richard Mark Pierce
Patented Case
View Patent ↗
Granted: Feb 27, 2001
Filed: Sep 15, 1999
Inventors
Sherman B. Frederick
Mark D. Kinter
Richard Mark Pierce
Assignee (at issue)
TENNANT COMPANY
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.