Granted Patent
Utility
US 6,491,252 · App. 09/828,006
Winding core holding mechanism, roll medium holding device having the same, and winding device using said mechanism and device
Inventors:
Fumito Komatsu, Noboru Ueno, Kiyotsugu Takasawa
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Apr 6, 2001
Inventors
Fumito Komatsu
Noboru Ueno
Kiyotsugu Takasawa
Assignees (at issue)
Sankyo Seiki Mfg. Co., Ltd
CANON KABUSHIKI KAISHA
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.