Granted Patent
Utility
US 4,297,778 · App. 06/144,342
Method and apparatus for removing liners from metal closures
Inventors:
Earl E. Rumberger, Frank Kelly
Patented Case
View Patent ↗
Granted: Nov 3, 1981
Filed: Apr 28, 1980
Inventors
Earl E. Rumberger
Frank Kelly
Assignee (at issue)
Aluminum Company of America
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.