Granted Patent
Utility
US 4,753,498 · App. 06/841,757
Optical reader
Inventors:
Hiroshi Saitoh, Hiromitsu Okada, Hironobu Watanabe, Hiroshi Watanabe, Michio Waki, Keizo Shiihara, Hiromitsu Kijima, Yukito Matsuo, Tsuyoshi Ishida
Patented Case
View Patent ↗
Granted: Jun 28, 1988
Filed: Mar 20, 1986
Inventors
Hiroshi Saitoh
Hiromitsu Okada
Hironobu Watanabe
Hiroshi Watanabe
Michio Waki
Keizo Shiihara
Hiromitsu Kijima
Yukito Matsuo
Tsuyoshi Ishida
Assignees (at issue)
Tokyo Kogaku Kikai Kabushiki Kaisha
Kabushiki Kaisha Toshiba
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.