Granted Patent
Utility
US 6,076,637 · App. 09/046,195
Top-of-rail lubrication rate control by the hydraulic pulse width modulation method
Inventor:
Sudhir Kumar
Patented Case
View Patent ↗
Granted: Jun 20, 2000
Filed: Feb 23, 1998
Inventor
Sudhir 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.