Granted Patent
Utility
US 4,412,752 · App. 06/303,812
Method and apparatus for determining the cooling characteristics of a quenching medium
Inventors:
Raymond A. Cellitti, John J. Connelly
Patented Case
View Patent ↗
Granted: Nov 1, 1983
Filed: Sep 21, 1981
Inventors
Raymond A. Cellitti
John J. Connelly
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.