Granted Patent
Utility
US 6,529,486 · App. 09/058,345
Trunked radio repeater communication system
Inventors:
Keith Barnes, Rory A. Smith, Mervin L. Grindahl
Patented Case
View Patent ↗
Granted: Mar 4, 2003
Filed: Apr 10, 1998
Inventors
Keith Barnes
Rory A. Smith
Mervin L. Grindahl
Assignee (at issue)
Transcrypt Internationall E. F. Johnson Company
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.