Granted Patent
Utility
US 6,137,968 · App. 09/429,029
Image forming apparatus
Inventors:
Kazuo Sunou, Junji Shirakawa, Takayuki Muneyasu
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Oct 29, 1999
Inventors
Kazuo Sunou
Junji Shirakawa
Takayuki Muneyasu
Assignee (at issue)
Hitachi Koki 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.