Granted Patent
Utility
US 6,497,272 · App. 09/417,737
Single crystal casting mold
Inventor:
James D. Maslen
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Oct 14, 1999
Inventor
James D. Maslen
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.