|
| US4717135 | 12 Aug 1986 | 5 Jan 1988 | Kimberly-Clark Corporation | Apparatus and process for automatically interfolding sheets and separating them into bundles |
| US4778441 | 16 Jun 1987 | 18 Oct 1988 | C.G. Bretting Manufacturing Co., Inc. | Interfolding machinery improvement |
| US5147273 | 10 Jul 1990 | 15 Sep 1992 | Winkler & Duennebier Maschinenfabrik KG | Method and apparatus for producing stacks of interleaved material sheets |
| US6488194 | 30 Aug 2000 | 3 Dec 2002 | C.G. Bretting Manufacturing Company, Inc. | Vacuum timing device and method for producing the same |
| US6539829 | 3 Jun 1999 | 1 Apr 2003 | C. G. Bretting Manufacturing Company, Inc. | Rotary valve assembly and method |
| US7008364 | 27 Sep 2002 | 7 Mar 2006 | C.G. Bretting Manufacturing Company, Inc. | Sheet folding apparatus and method |
| US7530569 | 15 Oct 2004 | 12 May 2009 | Fabio Perini S.p.A. | High volume adjustable vacuum assembly for a roll in an interfolding machine |
| US7758486 | 2 Feb 2006 | 20 Jul 2010 | C.G. Bretting Manufacturing Company | Sheet folding apparatus and method |
