Granted Patent
Utility
US 4,364,236 · App. 06/211,571
Refrigerant recovery and recharging system
Inventors:
Ralph C. Lower, Roger D. Shirley
Patented Case
View Patent ↗
Granted: Dec 21, 1982
Filed: Dec 1, 1980
Inventors
Ralph C. Lower
Roger D. Shirley
Assignee (at issue)
Robinair Manufacturing 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.