Granted Patent
Utility
US 5,127,239 · App. 07/681,365
Refrigerant handling system with facility for clearing system components of refrigerant
Inventors:
Kenneth W. Manz, Mark E. Ramsey
Patented Case
View Patent ↗
Granted: Jul 7, 1992
Filed: Apr 8, 1991
Inventors
Kenneth W. Manz
Mark E. Ramsey
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.