Granted Patent
Utility
US 4,237,955 · App. 06/006,517
Apparatus and method for grooving tires
Inventor:
Andrew Clayton
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Jan 25, 1979
Inventor
Andrew Clayton
Assignee (at issue)
Brad Ragan, Inc.
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.