|
| US4252516 | 23 Ago 1979 | 24 Feb 1981 | Ethyl Corporation | Apparatus for producing perforated film |
| US5580424 | 4 Mar 1994 | 3 Dic 1996 | Valmet Corporation | Apparatus and method for sealing a suction box of a suction roll in a paper machine |
| US5975532 | 16 May 1997 | 2 Nov 1999 | Valmet Corporation | Seal construction for a suction roll in a paper machine |
| US7841103 | 3 Nov 2006 | 30 Nov 2010 | Kimberly-Clark Worldwide, Inc. | Through-air dryer assembly |