Granted Patent
Utility
US 5,579,532 · App. 07/899,696
Rotating ring structure for gas turbine engines and method for its production
Inventor:
Jon F. Edd
Patented Case
View Patent ↗
Granted: Nov 26, 1996
Filed: Jun 16, 1992
Inventor
Jon F. Edd
Assignee (at issue)
Aluminum Company of America
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.