Granted Patent
Utility
US 4,865,073 · App. 07/095,870
Liquid level control for refrigeration system
Inventor:
Erich J. Kocher
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: Sep 14, 1987
Inventor
Erich J. Kocher
Assignee (at issue)
Vilter 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.