Granted Patent
Utility
US 5,448,752 · App. 08/044,140
Telecommunications system
Inventor:
Peter J. Mabey
Patented Case
View Patent ↗
Granted: Sep 5, 1995
Filed: Apr 8, 1993
Inventor
Peter J. Mabey
Assignee (at issue)
U.S. Philips 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.