Granted Patent
Utility
US 4,903,477 · App. 07/296,353
Gas turbine combustor transition duct forced convection cooling
Inventor:
Graham P. Butt
Patented Case
View Patent ↗
Granted: Feb 27, 1990
Filed: Jan 10, 1989
Inventor
Graham P. Butt
Assignee (at issue)
Westinghouse Electric Company LLC
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.