|
| US3952914 | 24 Feb 1975 | 27 Abr 1976 | | Re-sealable container lid |
| US4003493 | 9 Dic 1975 | 18 Ene 1977 | | Easy-open container with nondetachable opening member |
| US4023703 | 27 May 1975 | 17 May 1977 | | Easy-open container with flange push-in member |
| US4024980 | 7 May 1976 | 24 May 1977 | Crown Cork & Seal Company, Inc. | Easy opening can end having a closure plug |
| US4113134 | 17 Nov 1977 | 12 Sep 1978 | | Can closure |
| US4946061 | 25 Sep 1989 | 7 Ago 1990 | Shell Oil Company | Reclosable opening device for a container |
| US6883679 | 30 Oct 2002 | 26 Abr 2005 | L. L. Culmat L.P. | Snap-insert hole closing plug |
| US7234221 | 23 Nov 2004 | 26 Jun 2007 | L.L. Culmat, L.P. | Method of closing a partition opening |
| US7766183 | 30 Jun 2003 | 3 Ago 2010 | Crown Packaging Technology, Inc. | Peelable lid structure |
| USRE28910 | 4 Abr 1975 | 20 Jul 1976 | The Broken Hill Proprietary Company Limited | Push-in easy-opening closures |
