Granted Patent
Utility
US 4,617,604 · App. 06/689,358
Method for driving a relay
Inventors:
Yoh Narimatsu, Minoru Niizaki
Patented Case
View Patent ↗
Granted: Oct 14, 1986
Filed: Jan 7, 1985
Inventors
Yoh Narimatsu
Minoru Niizaki
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.