Granted Patent
Utility
US 4,181,482 · App. 06/006,320
Tire tread forming apparatus
Inventors:
Charles E. Grawey, John J. Groezinger, Quentin T. Woods
Patented Case
View Patent ↗
Granted: Jan 1, 1980
Filed: Jan 25, 1979
Inventors
Charles E. Grawey
John J. Groezinger
Quentin T. Woods
Assignee (at issue)
Caterpillar Tractor Co.
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.