Granted Patent
Utility
US 5,638,422 · App. 07/821,508
Distributed antenna personal communication networks system
Inventor:
Geoffrey S. Roman
Patented Case
View Patent ↗
Granted: Jun 10, 1997
Filed: Jan 15, 1992
Inventor
Geoffrey S. Roman
Assignee (at issue)
General Instrument 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.