Granted Patent
Utility
US 6,237,420 · App. 09/291,879
Differential oil pressure control apparatus and method
Inventors:
Mitchell R. Rowlette, Mark A. Eifler
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Apr 14, 1999
Inventors
Mitchell R. Rowlette
Mark A. Eifler
Assignee (at issue)
Texas Instruments Incorporated
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.