Granted Patent
Utility
US 4,727,740 · App. 06/858,576
Thermal and wear resistant tough nickel based alloy guide rolls
Inventors:
Ritsue Yabuki, Junya Ohe, Takumi Kawamura
Patented Case
View Patent ↗
Granted: Mar 1, 1988
Filed: Apr 24, 1986
Inventors
Ritsue Yabuki
Junya Ohe
Takumi Kawamura
Assignee (at issue)
Mitsubishi Kinzoku 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.