Granted Patent
Utility
US 4,383,571 · App. 06/244,253
Dummy bar for continuous casting equipment
Inventors:
David W. Frantz, Louis Lazaretti
Patented Case
View Patent ↗
Granted: May 17, 1983
Filed: Mar 16, 1981
Inventors
David W. Frantz
Louis Lazaretti
Assignee (at issue)
Gladwin 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.