Granted Patent
Utility
US 4,879,720 · App. 07/166,187
Decoder ring system
Inventors:
William A. Shumate, Daniel R. Kindred, Franklin P. Antonio, Steven H. Gardner, Krishnanand Kelkar, Thomas R. Bilotta, Steven Rogers
Patented Case
View Patent ↗
Granted: Nov 7, 1989
Filed: Mar 10, 1988
Inventors
William A. Shumate
Daniel R. Kindred
Franklin P. Antonio
Steven H. Gardner
Krishnanand Kelkar
Thomas R. Bilotta
Steven Rogers
Assignee (at issue)
M/A-COM Government 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.