Granted Patent
Utility
US 6,597,897 · App. 09/211,095
Low power radio frequency transmitter with controllable gain
Inventor:
Qingfeng Tang
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Dec 14, 1998
Inventor
Qingfeng Tang
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.