Granted Patent
Utility
US 6,018,656 · App. 08/682,999
Programmable cellular telephone and system
Inventor:
Kazuhiko Shirai
Patented Case
View Patent ↗
Granted: Jan 25, 2000
Filed: Jul 18, 1996
Inventor
Kazuhiko Shirai
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.