Granted Patent
Utility
US 6,098,575 · App. 09/164,610
Coolant filter with coolant additive sensor
Inventors:
Brian W. Mulshine, Edward H. Howell, III
Patented Case
View Patent ↗
Granted: Aug 8, 2000
Filed: Oct 1, 1998
Inventors
Brian W. Mulshine
Edward H. Howell, III
Assignee (at issue)
Navistar International Transportation
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.