Granted Patent
Utility
US 4,579,495 · App. 06/337,955
Environmental retained tab ends
Inventors:
Karl O. Dassler, Neal E. Langseder
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Jan 8, 1982
Inventors
Karl O. Dassler
Neal E. Langseder
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.