Granted Patent
Utility
US 5,689,549 · App. 08/347,745
Cordless telephone base unit arranged for operating with multiple portable units
Inventors:
Guido Bertocci, William J. Nealon, Siegfried F. Rehwinkel, Walter Tomkoski, Hon-Chi Yu
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Dec 1, 1994
Inventors
Guido Bertocci
William J. Nealon
Siegfried F. Rehwinkel
Walter Tomkoski
Hon-Chi Yu
Assignee (at issue)
LUCENT TECHNOLOGIES INC.
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.