Granted Patent
Utility
US 4,702,090 · App. 06/922,746
Magnetic refrigeration apparatus with conductive heat transfer
Inventors:
John A. Barclay, Walter F. Stewart, F. Coyne Prenger, Carl Bruno Zimm, John Patrick Parsons
Patented Case
View Patent ↗
Granted: Oct 27, 1987
Filed: Oct 24, 1986
Inventors
John A. Barclay
Walter F. Stewart
F. Coyne Prenger
Carl Bruno Zimm
John Patrick Parsons
Assignee (at issue)
Astronautics Corporation of America
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.