Granted Patent
Utility
US 4,980,680 · App. 07/483,349
Coded surface acoustical wave (saw) motor vehicle security device
Inventors:
William C. Knoll, James R. McColl
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: Feb 20, 1990
Inventors
William C. Knoll
James R. McColl
Assignee (at issue)
GTE Products Corp. and GTE Laboratories, 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.