Granted Patent
Utility
US 6,647,873 · App. 10/118,089
Printer
Inventors:
Keiichi Chiba, Hironobu Takasawa
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Apr 9, 2002
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.