Granted Patent
Utility
US 6,074,282 · App. 08/824,850
External hone and method of making and using the same
Inventor:
John J. Schimweg
Patented Case
View Patent ↗
Granted: Jun 13, 2000
Filed: Mar 26, 1997
Inventor
John J. Schimweg
Assignee (at issue)
Sunnen Products 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.