Granted Patent
Utility
US 4,290,214 · App. 06/150,869
Earthworking implement side plate wear member
Inventor:
Visvaldis A. Stepe
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Feb 4, 1980
Inventor
Visvaldis A. Stepe
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.