Granted Patent
Utility
US 6,050,422 · App. 08/804,405
Rotary sweep scalper
Inventors:
Michael Lawrence Peters, Mark Saltus
Patented Case
View Patent ↗
Granted: Apr 18, 2000
Filed: Feb 21, 1997
Inventors
Michael Lawrence Peters
Mark Saltus
Assignee (at issue)
The GSI Group, LLC
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.