Granted Patent
Utility
US 5,606,323 · App. 08/521,898
Diode modulator for radio frequency transponder
Inventors:
Harley Heinrich, Daniel J. Friedman
Patented Case
View Patent ↗
Granted: Feb 25, 1997
Filed: Aug 31, 1995
Inventors
Harley Heinrich
Daniel J. Friedman
Assignee (at issue)
International Business Machines Corporation
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.