Granted Patent
Utility
US 6,689,007 · App. 10/062,810
Manual valve for automatic transmission
Inventor:
Robert C. Warnke
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Feb 5, 2002
Inventor
Robert C. Warnke
Assignee (at issue)
Sonnax 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.