Granted Patent
Utility
US 5,146,473 · App. 07/658,065
Subscriber unit for wireless digital subscriber communication system
Inventors:
David N. Critchlow, Moshe Yehushua, Graham M. Avis, Wade L. Heimbigner, Karle J. Johnson
Patented Case
View Patent ↗
Granted: Sep 8, 1992
Filed: Feb 20, 1991
Inventors
David N. Critchlow
Moshe Yehushua
Graham M. Avis
Wade L. Heimbigner
Karle J. Johnson
Assignee (at issue)
International Mobile 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.