Granted Patent
Utility
US 6,237,790 · App. 09/198,436
Cap having de-ovalization bead on skirt
Inventor:
Rudolph R. Verderber
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Nov 24, 1998
Inventor
Rudolph R. Verderber
Assignee (at issue)
Portola Packaging, Inc.
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.