Granted Patent
Utility
US 6,774,522 · App. 10/263,696
Rotor with slot wedges having different dimension to reduce stress
Inventors:
Hiroshi Aoyama, Hidehiro Ejima, Kazuo Gotou
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Oct 4, 2002
Inventors
Hiroshi Aoyama
Hidehiro Ejima
Kazuo Gotou
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.