Granted Patent
Utility
US 4,333,404 · App. 06/160,059
Reinforced railway pedestal liner
Inventor:
Donald L. Kleykamp
Patented Case
View Patent ↗
Granted: Jun 8, 1982
Filed: Jun 16, 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.