Granted Patent
Utility
US 4,294,357 · App. 06/110,878
Pop up abrasive disc dispenser
Inventors:
John Herbert Stevens, Bruce Reidel
Patented Case
View Patent ↗
Granted: Oct 13, 1981
Filed: Jan 10, 1980
Inventors
John Herbert Stevens
Bruce Reidel
Assignee (at issue)
Kennecott Holdings 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.