Granted Patent
Utility
US 5,541,553 · App. 08/398,678
Amplifier with a function for switching on and off the output signal
Inventors:
Norio Chujo, Yoshihiko Hayashi, Akio Osaki
Patented Case
View Patent ↗
Granted: Jul 30, 1996
Filed: Mar 6, 1995
Inventors
Norio Chujo
Yoshihiko Hayashi
Akio Osaki
Assignee (at issue)
HITACHI, 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.