Granted Patent
Utility
US 4,447,699 · App. 06/439,551
Closed loop control of continuous seam resistance heated forge welding cylinders
Inventors:
Vance B. Gold, Edward F. Kubacki, Thomas Krewenka
Patented Case
View Patent ↗
Granted: May 8, 1984
Filed: Nov 5, 1982
Inventors
Vance B. Gold
Edward F. Kubacki
Thomas Krewenka
Assignee (at issue)
American Can 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.