Granted Patent
Utility
US 4,538,260 · App. 06/525,566
Electronic time switch
Inventor:
Tadanobu Nikaido
Patented Case
View Patent ↗
Granted: Aug 27, 1985
Filed: Aug 22, 1983
Inventor
Tadanobu Nikaido
Assignee (at issue)
Nippon Telegraph and Telephone Public Corporation
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.