Granted Patent
Utility
US 5,477,941 · App. 08/212,768
On-board lubrication system for direct application to curved and tangent railroad track
Inventors:
Sudhir Kumar, Shiv Kumar
Patented Case
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Granted: Dec 26, 1995
Filed: Mar 15, 1994
Inventors
Sudhir Kumar
Shiv Kumar
Assignee (at issue)
Tranergy Corporation
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.