|
| US4874139 | 31 oct. 1988 | 17 oct. 1989 | | Tubular core assemblies for rolls of paper or other sheet material |
| US5236141 | 25 mars 1992 | 17 août 1993 | | Tubular core assemblies for rolls of paper or other sheet material |
| US5340050 | 20 avr. 1993 | 23 août 1994 | Sonoco Products Company | Tubular core assembly having inside-diameter reducing end members secured by mechanical interlocking member |
| US5356093 | 27 janv. 1992 | 18 oct. 1994 | | Tubular core assemblies for rolls of paper or other sheet material |
| US5393010 | 20 avr. 1993 | 28 févr. 1995 | Sonoco Products Company | Tubular core assembly for winding paper and other sheet material having mechancially interlocked end members |
| US5469619 | 21 avr. 1994 | 28 nov. 1995 | Sonoco Products Company | Tubular core assembly having inside-diameter reducing end members secured by mechanical interlocking member |
| US5595356 | 12 oct. 1995 | 21 janv. 1997 | | Tubular core assemblies for rolls of paper or other sheet material |
| US5725178 | 3 janv. 1997 | 10 mars 1998 | 927246 Ontario Inc. | Tubular core assemblies for rolls of paper or other sheet material |
| US6076764 | 30 oct. 1998 | 20 juin 2000 | F.T. Acquisitions, L.P. | Combination paper roll core and paper tube plug |
| US6264129 | 13 janv. 2000 | 24 juil. 2001 | Free-Flow Packaging International, Inc. | Mandrel mount |
| US6273360 | 13 janv. 2000 | 14 août 2001 | Free-Flow Packaging International, Inc. | Combination paper roll core and paper tube plug |
