Granted Patent
Utility
US 5,967,525 · App. 09/113,882
Drive mechanism for a rotating mechanical split seal and method of assembly thereof
Inventors:
Jan E. Sandgren, James S. Porter
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Jul 10, 1998
Inventors
Jan E. Sandgren
James S. Porter
Assignee (at issue)
John Crane Sealol 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.