Granted Patent
Utility
US 6,139,737 · App. 09/148,294
Transmission fluid filter having a ferrite-filled nylon magnetic body
Inventor:
John W. Gizowski
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Sep 4, 1998
Inventor
John W. Gizowski
Assignee (at issue)
SPX 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.