Granted Patent
Utility
US 4,940,222 · App. 07/311,165
Paper feed device and paper cassette therefor
Inventors:
Mikihiko Maeno, Yukio Ohta, Yoshiharu Momiyama, Hisao Ono, Katsumasa Takahata, Kazuyuki Ozono, Makoto Shimizu, Mikio Yamamoto
Patented Case
View Patent ↗
Granted: Jul 10, 1990
Filed: Feb 15, 1989
Inventors
Mikihiko Maeno
Yukio Ohta
Yoshiharu Momiyama
Hisao Ono
Katsumasa Takahata
Kazuyuki Ozono
Makoto Shimizu
Mikio Yamamoto
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.