Granted Patent
Utility
US 4,825,919 · App. 07/232,143
Railroad adzer debris removal means
Inventors:
Todd R. Kubicek, Andrew M. Dieringer
Patented Case
View Patent ↗
Granted: May 2, 1989
Filed: Aug 15, 1988
Inventors
Todd R. Kubicek
Andrew M. Dieringer
Assignee (at issue)
Oak Industries Inc.
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.