Granted Patent
Utility
US 6,151,493 · App. 09/000,764
Device for prohibiting unauthorized use of electronic devices
Inventors:
Toyoki Sasakura, Kenichi Miyamoto
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Dec 30, 1997
Inventors
Toyoki Sasakura
Kenichi Miyamoto
Assignee (at issue)
Miyaken 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.