Granted Patent
Utility
US 4,927,992 · App. 07/021,856
Energy beam casting of metal articles
Inventors:
Graham A. Whitlow, Gerald J. Bruck, James E. Smith
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Mar 4, 1987
Inventors
Graham A. Whitlow
Gerald J. Bruck
James E. Smith
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.