Granted Patent
Utility
US 6,241,000 · App. 08/485,377
Method for removing cores from castings
Inventors:
Patrick L. Conroy, Harold C. Pierson, Michael M. McRae
Patented Case
View Patent ↗
Granted: Jun 5, 2001
Filed: Jun 7, 1995
Inventors
Patrick L. Conroy
Harold C. Pierson
Michael M. McRae
Assignee (at issue)
Howmet Research 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.