Granted Patent
Utility
US 4,741,447 · App. 07/043,106
Linerless cap closure
Inventor:
Christian J. John
Patented Case
View Patent ↗
Granted: May 3, 1988
Filed: Apr 27, 1987
Inventor
Christian J. John
Assignee (at issue)
American National 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.