|
| US3947014 | 16 Dec 1974 | 30 Mar 1976 | Georgia Pacific Corporation | Machine for manufacturing articles of folded plasterboard |
| US4012932 | 5 Jun 1975 | 22 Mar 1977 | Marc Wood S.A. | Machine for manufacturing herringbone-pleated structures |
| US4570964 | 8 Jun 1983 | 18 Feb 1986 | Taurus Gumiipari Vallalat | Elastic self carrying bellows |
| US4798575 | 20 Feb 1987 | 17 Jan 1989 | Flodins Filter AB | Method and apparatus for the manufacture of filters |
| US5543047 | 21 Dec 1993 | 6 Aug 1996 | Pall Corporation | Filter with over-laid pleats in intimate contact |
| US5725784 | 7 Jun 1996 | 10 Mar 1998 | Pall Corporation | Filtering method |
| US5876601 | 7 Jun 1996 | 2 Mar 1999 | Pall Corporation | Pleated filter having a helically wrapped septum to tension the filter |
| US6022305 | 11 Mar 1998 | 8 Feb 2000 | AAF International | Pleating apparatus |
| US6113784 | 3 Aug 1998 | 5 Sep 2000 | Pall Corporation | Filter |
