Granted Patent
Utility
US 5,493,869 · App. 08/357,929
Recovery of at least two different and incompatible refrigerant types
Inventors:
Roger D. Shirley, Gary P. Murray, Kenneth W. Manz
Patented Case
View Patent ↗
Granted: Feb 27, 1996
Filed: Dec 16, 1994
Inventors
Roger D. Shirley
Gary P. Murray
Kenneth W. Manz
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.