|
| US4203355 | 7 Mar 1978 | 20 May 1980 | American Can Company | Packaging structure and apparatus useful in its assembly |
| US4272264 | 9 Jul 1976 | 9 Jun 1981 | Multiform Desiccant Products, Inc. | Adsorbent package |
| US4680073 | 17 Mar 1986 | 14 Jul 1987 | Reynolds Metals Company | Method and apparatus for heat sealing |
| US5056292 | 10 May 1990 | 15 Oct 1991 | Multivac Sepp Haggenmuller KG | Vacuum chamber packaging machine |
| US5979145 | 17 Nov 1997 | 9 Nov 1999 | Isover Saint-Gobain | Method and device for compressing and packaging compressible products |
| US6862867 | 16 Ene 2003 | 8 Mar 2005 | Pack-Tech, L.L.C. | Bag sealing system and method |
| US7328556 | 7 Mar 2005 | 12 Feb 2008 | | Bag sealing system and method |
| US8069637 | 22 Feb 2011 | 6 Dic 2011 | | Bag sealing system and method |
