Granted Patent
Utility
US 5,318,094 · App. 07/951,359
Production of complex cavities inside castings or semi-solid forms
Inventors:
Theodore J. Joy, David M. McCray
Patented Case
View Patent ↗
Granted: Jun 7, 1994
Filed: Sep 25, 1992
Inventors
Theodore J. Joy
David M. McCray
Assignee (at issue)
AlliedSignal, Inc.
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.