|
| US4718365 | 2 Jun 1986 | 12 Ene 1988 | | Blind-stitch sewing machine |
| US5501164 | 14 Abr 1995 | 26 Mar 1996 | Porter Sewing Machines, Inc. | Apparatus for assembly of pillow-top mattress covers |
| US5586511 | 7 Jun 1995 | 24 Dic 1996 | Porter Sewing Machines, Inc. | Method and apparatus for assembly of pillow-top mattress covers |
| US5782190 | 8 May 1996 | 21 Jul 1998 | Porter Sewing Machines, Inc. | Apparatus for assembly of pillow-top mattress covers |
