Granted Patent
Utility
US 5,265,437 · App. 07/745,514
Automotive refrigeration system requiring minimal refrigerant
Inventors:
Zalman P. Saperstein, Charles James Rogers
Patented Case
View Patent ↗
Granted: Nov 30, 1993
Filed: Aug 15, 1991
Inventors
Zalman P. Saperstein
Charles James Rogers
Assignee (at issue)
MODINE MANUFACTURING COMPANY
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.