Granted Patent
Utility
US 5,544,494 · App. 08/364,783
Method and apparatus for refrigerant purification
Inventors:
Kenneth W. Manz, Daniel L. Olds
Patented Case
View Patent ↗
Granted: Aug 13, 1996
Filed: Dec 27, 1994
Inventors
Kenneth W. Manz
Daniel L. Olds
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.