Granted Patent
Utility
US 6,225,873 · App. 08/566,270
Frequency shift key modulating oscillator
Inventor:
John P. Hill
Patented Case
View Patent ↗
Granted: May 1, 2001
Filed: Dec 1, 1995
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.