Granted Patent
Utility
US 5,168,293 · App. 07/736,594
Image forming apparatus
Inventors:
Masato Ogasawara, Yoshitsugu Nakatomi
Patented Case
View Patent ↗
Granted: Dec 1, 1992
Filed: Jul 26, 1991
Inventors
Masato Ogasawara
Yoshitsugu Nakatomi
Assignee (at issue)
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.