Granted Patent
Utility
US 4,401,486 · App. 06/266,882
Method for annealing work hardened portions of structural beams
Inventors:
James J. Pusateri, Charles R. Bartlett, Paul D. Brazie
Patented Case
View Patent ↗
Granted: Aug 30, 1983
Filed: May 26, 1981
Inventors
James J. Pusateri
Charles R. Bartlett
Paul D. Brazie
Assignee (at issue)
Park-Ohio Industries
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.