Granted Patent
Utility
US 4,384,462 · App. 06/208,778
Multiple compressor refrigeration system and controller thereof
Inventors:
Joseph D. Overman, Dean Calton
Patented Case
View Patent ↗
Granted: May 24, 1983
Filed: Nov 20, 1980
Inventors
Joseph D. Overman
Dean Calton
Assignee (at issue)
Friedrich Air Conditioning & Refrigeration Co.
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.