Granted Patent
Utility
US 5,209,077 · App. 07/799,433
Refrigerant recovery system
Inventors:
Kenneth W. Manz, Christopher M. Powers, Charles E. Dull
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: Nov 26, 1991
Inventors
Kenneth W. Manz
Christopher M. Powers
Charles E. Dull
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.