Granted Patent
Utility
US 4,449,357 · App. 06/398,176
Track chain link and forging process for the manufacture of track chain links
Inventor:
Paul Balitch
Patented Case
View Patent ↗
Granted: May 22, 1984
Filed: Jul 14, 1982
Inventor
Paul Balitch
Assignee (at issue)
Caterpiller 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.