Granted Patent
Utility
US 4,377,075 · App. 06/241,476
Refrigerant and method for shipping perishable materials
Inventor:
Michael Russo
Patented Case
View Patent ↗
Granted: Mar 22, 1983
Filed: Mar 9, 1981
Inventor
Michael Russo
Assignee (at issue)
New England Nuclear 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.