Granted Patent
Utility
US 4,275,272 · App. 06/092,409
Remote time and charge system
Inventors:
Michael F. Mennino, Jr., Donald J. Coppin
Patented Case
View Patent ↗
Granted: Jun 23, 1981
Filed: Nov 5, 1979
Inventors
Michael F. Mennino, Jr.
Donald J. Coppin
Assignee (at issue)
GTE Automatic Electric Laboratories, Incorporated
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.