Granted Patent
Utility
US 3,942,578 · App. 05/517,992
Method of repairing large castings
Inventors:
Robert H. Kachik, Samuel J. Manganello, Arthur J. Pignocco
Patented Case
View Patent ↗
Granted: Mar 9, 1976
Filed: Oct 25, 1974
Inventors
Robert H. Kachik
Samuel J. Manganello
Arthur J. Pignocco
Assignee (at issue)
United States Steel 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.