Granted Patent
Utility
US 4,834,346 · App. 07/159,534
Ladle lid arrangement
Inventors:
Klaus Heyer, Richard L. Minion, Aleksandar Pavlica
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Feb 9, 1988
Inventors
Klaus Heyer
Richard L. Minion
Aleksandar Pavlica
Assignee (at issue)
Stelco 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.