Granted Patent
Utility
US 5,216,845 · App. 07/693,492
Method of machining nickel based superalloys
Inventors:
Sergej-Tomislav Buljan, Helmut Lingertat, Steven F. Wayne
Patented Case
View Patent ↗
Granted: Jun 8, 1993
Filed: Apr 30, 1991
Inventors
Sergej-Tomislav Buljan
Helmut Lingertat
Steven F. Wayne
Assignee (at issue)
GTE Valenite 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.