Granted Patent
Utility
US 5,888,385 · App. 08/684,470
Vehicle coolant recycling
Inventors:
Kenneth W. Ische, Michael W. Johnson, William S. Dea, Thomas D. Chandler
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Jul 19, 1996
Inventors
Kenneth W. Ische
Michael W. Johnson
William S. Dea
Thomas D. Chandler
Assignee (at issue)
Scepter Manufacturing, LLC.
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.