Granted Patent
Utility
US 5,153,500 · App. 07/746,913
Constant-voltage generation circuit
Inventors:
Kazushige Yamamoto, Hiroyuki Tokutomi
Patented Case
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Granted: Oct 6, 1992
Filed: Aug 19, 1991
Inventors
Kazushige Yamamoto
Hiroyuki Tokutomi
Assignee (at issue)
OKI ELECTRIC INDUSTRY 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.