Granted Patent
Utility
US 6,648,600 · App. 10/136,313
Turbine rotor
Inventors:
Yasuo Takahashi, Shinya Marushima, Shinichi Higuchi, Tsuyoshi Takano
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: May 2, 2002
Inventors
Yasuo Takahashi
Shinya Marushima
Shinichi Higuchi
Tsuyoshi Takano
Assignee (at issue)
HITACHI, 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.