Granted Patent
Utility
US 6,471,213 · App. 09/281,804
Seal structure for gas turbine
Inventors:
Masanori Yuri, Toshishige Ai
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Mar 31, 1999
Inventors
Masanori Yuri
Toshishige Ai
Assignee (at issue)
MITSUBISHI ELECTRIC CORPORATION
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.