Granted Patent
Utility
US 4,323,751 · App. 06/189,523
Method of welding wear member for railway vehicle
Inventor:
Donald L. Kleykamp
Patented Case
View Patent ↗
Granted: Apr 6, 1982
Filed: Sep 22, 1980
Inventor
Donald L. Kleykamp
Assignee (at issue)
DayCo Holdings, LP
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.