1
Thomas P Hambleton, Erick Guevara, Peter Rychiger: End closure structure for a container. International Paper Company, Richard J Ancel, December 10, 1985: US04557398 (21 worldwide citation)

The present invention is an end closure structure for a container having a flexible central member (6) with an outwardly dished center section and at least one opening structure (18) in the central member (6), a removable thin flexible closure member (12) disposed over the opening structure (18) whi ...


2
Thomas P Hambleton, Erick Guevara, Peter Rychiger: Process for providing filled containers. International Paper Company, Walt Thomas Zielinski, Richard J Ancel, July 21, 1987: US04680917 (21 worldwide citation)

The present invention is an end closure structure for a container having a flexible central member (6) with an outwardly dished center section and at least one opening structure (18) in the central member (6), a removable thin flexible closure member (12) disposed over the opening structure (18) whi ...