Granted Patent
Utility
US 4,935,717 · App. 07/367,709
Resistor device for controlling a blower
Inventors:
Katsuyoshi Osawa, Shinichi Ohi, Tadahiro Takahashi, Kazuo Noguchi, Kashiwa Kobayashi
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Jun 19, 1989
Inventors
Katsuyoshi Osawa
Shinichi Ohi
Tadahiro Takahashi
Kazuo Noguchi
Kashiwa Kobayashi
Assignee (at issue)
Diesel Kiki 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.