Granted Patent
Utility
US 4,262,971 · App. 06/021,137
Track chain assembly with integral pin and link
Inventor:
James R. Shuler
Patented Case
View Patent ↗
Granted: Apr 21, 1981
Filed: Mar 16, 1979
Inventor
James R. Shuler
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.