Granted Patent
Utility
US 6,619,941 · App. 09/560,491
Cast film cooling device
Inventors:
David J. Smith, Kenneth D. Warnock
Patented Case
View Patent ↗
Granted: Sep 16, 2003
Filed: Apr 28, 2000
Inventors
David J. Smith
Kenneth D. Warnock
Assignee (at issue)
Battenfeld Gloucester Engineering Co., 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.