Granted Patent
Utility
US 6,317,009 · App. 09/836,047
Frequency shift key modulating oscillator
Inventor:
John P. Hill
Patented Case
View Patent ↗
Granted: Nov 13, 2001
Filed: Apr 16, 2001
Inventor
John P. Hill
Assignee (at issue)
Lear Automotive Dearborn, 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.