Granted Patent
Utility
US 5,705,266 · App. 08/320,933
Core material for the casting of articles and related process
Inventors:
Thomas M. Keelan, Stanley J. Hinkle
Patented Case
View Patent ↗
Granted: Jan 6, 1998
Filed: Oct 11, 1994
Inventors
Thomas M. Keelan
Stanley J. Hinkle
Assignee (at issue)
DETROIT DIESEL 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.