Granted Patent
Utility
US 4,145,481 · App. 05/821,546
Process for producing elevated temperature corrosion resistant metal articles
Inventors:
Dinesh K. Gupta, Louis E. Dardi, William R. Freeman
Patented Case
View Patent ↗
Granted: Mar 20, 1979
Filed: Aug 3, 1977
Inventors
Dinesh K. Gupta
Louis E. Dardi
William R. Freeman
Assignee (at issue)
Howmet Turbine Components 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.