Granted Patent
Utility
US 5,366,535 · App. 07/989,057
Basic tundish covering compound
Inventors:
Lawrence J. Heaslip, James D. Dorricott
Patented Case
View Patent ↗
Granted: Nov 22, 1994
Filed: Dec 9, 1992
Inventors
Lawrence J. Heaslip
James D. Dorricott
Assignee (at issue)
Premier Services 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.