Granted Patent
Utility
US 4,368,929 · App. 06/315,772
Sealed track belt arrangement
Inventors:
Marvin E. Beyers, Anthony E. Kirn, Robert W. Untz
Patented Case
View Patent ↗
Granted: Jan 18, 1983
Filed: Oct 28, 1981
Inventors
Marvin E. Beyers
Anthony E. Kirn
Robert W. Untz
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.