Granted Patent
Utility
US 4,995,791 · App. 07/276,020
Refrigerant gas compressor unit
Inventor:
Joseph F. Loprete
Patented Case
View Patent ↗
Granted: Feb 26, 1991
Filed: Nov 25, 1988
Inventor
Joseph F. Loprete
Assignee (at issue)
Bristol Compressors, Inc.
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.