Granted Patent
Utility
US 4,136,735 · App. 05/728,657
Heat exchange apparatus including a toroidal-type radiator
Inventors:
Harold D. Beck, C. Paul Kolthoff, Jr.
Patented Case
View Patent ↗
Granted: Jan 30, 1979
Filed: Oct 1, 1976
Inventors
Harold D. Beck
C. Paul Kolthoff, Jr.
Assignee (at issue)
International Harvester 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.