Granted Patent
Utility
US 4,412,440 · App. 06/234,451
Process for making container
Inventors:
Thomas L. Phalin, James Joseph Ulmes
Patented Case
View Patent ↗
Granted: Nov 1, 1983
Filed: Feb 13, 1981
Inventors
Thomas L. Phalin
James Joseph Ulmes
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.