Granted Patent
Utility
US 5,496,431 · App. 08/166,838
Method and system for changing product specifications in a corrugation machine
Inventors:
Tadashi Hirakawa, Yukuharu Seki, Makoto Ando
Patented Case
View Patent ↗
Granted: Mar 5, 1996
Filed: Dec 15, 1993
Inventors
Tadashi Hirakawa
Yukuharu Seki
Makoto Ando
Assignee (at issue)
MITSUBISHI KOGYO 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.