Granted Patent
Utility
US 5,852,401 · App. 08/880,909
Distress message signal sending device
Inventor:
Kazunori Kita
Patented Case
View Patent ↗
Granted: Dec 22, 1998
Filed: Jun 23, 1997
Inventor
Kazunori Kita
Assignee (at issue)
CASIO COMPUTER CO., LTD.
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.