Granted Patent
Utility
US 5,026,488 · App. 07/482,342
Liquid recycling system
Inventor:
John S. Mesheau
Patented Case
View Patent ↗
Granted: Jun 25, 1991
Filed: Feb 20, 1990
Inventor
John S. Mesheau
Assignee (at issue)
Butler Associates
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.