Granted Patent
Utility
US 5,619,568 · App. 08/505,967
Cordless phone with time-out controlled ringer
Inventor:
Jerry A. Miller
Patented Case
View Patent ↗
Granted: Apr 8, 1997
Filed: Jul 24, 1995
Inventor
Jerry A. Miller
Assignees (at issue)
SONY GROUP CORPORATION
SONY ELECTRONICS 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.