Granted Patent
Utility
US 6,604,459 · App. 09/795,482
Printer
Inventors:
Keiichi Chiba, Hironobu Takasawa
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: Mar 1, 2001
Inventors
Keiichi Chiba
Hironobu Takasawa
Assignee (at issue)
Tohoku Ricoh 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.