Granted Patent
Utility
US 5,224,762 · App. 07/848,511
Sliding seal for mining machine power tranmission
Inventor:
Victor M. Levenstein
Patented Case
View Patent ↗
Granted: Jul 6, 1993
Filed: Mar 9, 1992
Inventor
Victor M. Levenstein
Assignee (at issue)
Indresco 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.