Granted Patent
Utility
US 6,356,293 · App. 09/609,064
Printer including a plurality of print drums
Inventor:
Hiroyuki Chiba
Patented Case
View Patent ↗
Granted: Mar 12, 2002
Filed: Jun 30, 2000
Inventor
Hiroyuki Chiba
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.