Granted Patent
Utility
US 4,737,029 · App. 06/856,579
Photometer
Inventors:
Kenji Yabusaki, Hitoshi Tozawa, Akira Noda, Takashi Ito
Patented Case
View Patent ↗
Granted: Apr 12, 1988
Filed: Apr 25, 1986
Inventors
Kenji Yabusaki
Hitoshi Tozawa
Akira Noda
Takashi Ito
Assignee (at issue)
Tokyo Kogaku Kikai Kabushiki Kaisha
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.