Granted Patent
Utility
US 4,903,324 · App. 07/150,542
Ring around transceiver
Inventor:
Thomas J. Warnagiris
Patented Case
View Patent ↗
Granted: Feb 20, 1990
Filed: Feb 1, 1988
Inventor
Thomas J. Warnagiris
Assignee (at issue)
Colin Electronics Co., Ltd.
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.