Granted Patent
Utility
US 5,860,789 · App. 08/791,510
Gas turbine rotor
Inventors:
Masaru Sekihara, Takashi Machida
Patented Case
View Patent ↗
Granted: Jan 19, 1999
Filed: Jan 30, 1997
Inventors
Masaru Sekihara
Takashi Machida
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.