Granted Patent
Utility
US 4,645,903 · App. 06/627,833
Gas metal arc welding process
Inventors:
Joseph M. De Vito, Kevin A. Lyttle, Ronald D. Sutton, Alan J. Westendorf, Nils E. Larson, Gerald Daniel Uttrachi
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Jul 5, 1984
Inventors
Joseph M. De Vito
Kevin A. Lyttle
Ronald D. Sutton
Alan J. Westendorf
Nils E. Larson
Gerald Daniel Uttrachi
Assignee (at issue)
Union Carbide 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.