Granted Patent
Utility
US 5,170,593 · App. 07/670,566
Method of making a perforated strip abrasive tool
Inventors:
James B. Tyler, Alfred F. Scheider, R. Brown Warner
Patented Case
View Patent ↗
Granted: Dec 15, 1992
Filed: Mar 18, 1991
Inventors
James B. Tyler
Alfred F. Scheider
R. Brown Warner
Assignee (at issue)
Jason Incorporated
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.