Granted Patent
Utility
US 4,859,990 · App. 07/039,577
Electrically programmable transceiver security system and integrated circuit
Inventor:
Marvin Isaacman
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Apr 15, 1987
Inventor
Marvin Isaacman
Assignee (at issue)
Linear LLC
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.