Granted Patent
Utility
US 5,611,887 · App. 08/428,637
Single facer and corrugating roll for the same
Inventors:
Hiroyuki Takenaka, Hiroaki Sasashige, Takayuki Miyake
Patented Case
View Patent ↗
Granted: Mar 18, 1997
Filed: Apr 25, 1995
Inventors
Hiroyuki Takenaka
Hiroaki Sasashige
Takayuki Miyake
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.