Granted Patent
Utility
US 4,765,150 · App. 07/012,578
Continuously variable capacity refrigeration system
Inventor:
Jacob P. Persem
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: Feb 9, 1987
Inventor
Jacob P. Persem
Assignee (at issue)
Margaux Controls, 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.