Granted Patent
Utility
US 6,739,544 · App. 10/106,827
Winding roll presser device and long material winding method
Inventors:
Kouichi Yuuki, Kiyoshi Mannen
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Mar 27, 2002
Inventors
Kouichi Yuuki
Kiyoshi Mannen
Assignees (at issue)
SUMITOMO HEAVY INDUSTRIES, LTD.
NIPPON PAPER INDUSTRIES, 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.