Granted Patent
Utility
US 6,237,712 · App. 09/280,310
Controlled two-speed axle shifting with automatic transmission
Inventors:
Michael James Lehman, Burnell L. Bender
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Mar 29, 1999
Inventors
Michael James Lehman
Burnell L. Bender
Assignee (at issue)
Navistar International Transportation
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.