Granted Patent
Utility
US 6,237,671 · App. 09/390,173
Method of casting with improved detectability of subsurface inclusions
Inventors:
Eliot S. Lassow, George R. Strabel, Kelly A. Koziol
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Sep 7, 1999
Inventors
Eliot S. Lassow
George R. Strabel
Kelly A. Koziol
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.