Granted Patent
Utility
US 6,650,351 · App. 10/267,975
Ink ribbon cassette and thermal transfer printer using the same
Inventors:
Toshiyuki Yamamoto, Toshinori Kudo
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Oct 9, 2002
Inventors
Toshiyuki Yamamoto
Toshinori Kudo
Assignee (at issue)
ALPS ELECTRIC 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.