Granted Patent
Utility
US 5,227,780 · App. 07/793,481
Apparatus with a portable UHF radio transmitter remote for controlling one or more of infrared controlled appliances
Inventor:
David C. Tigwell
Patented Case
View Patent ↗
Granted: Jul 13, 1993
Filed: Oct 16, 1991
Inventor
David C. Tigwell
Assignee (at issue)
Houston Satellite Systems, 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.