Granted Patent
Utility
US 4,571,502 · App. 06/446,865
Full wave rectifier having an operational amplifier
Inventors:
Tadakatsu Kimura, Takayoshi Makabe, Yoshiaki Kuraishi
Patented Case
View Patent ↗
Granted: Feb 18, 1986
Filed: Dec 6, 1982
Inventors
Tadakatsu Kimura
Takayoshi Makabe
Yoshiaki Kuraishi
Assignees (at issue)
Nippon Telegraph and Telephone Public Corporation
NIPPON ELECTRIC 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.