Granted Patent
Utility
US 4,249,665 · App. 06/064,229
Railway vehicle wear member
Inventor:
Donald L. Kleykamp
Patented Case
View Patent ↗
Granted: Feb 10, 1981
Filed: Aug 6, 1979
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.