Citada por|
| US4339085 | 14 Abr 1980 | 13 Jul 1982 | | Reversible material reducing mill | | US4944461 | 7 Ago 1989 | 31 Jul 1990 | Invequest, Inc. | Carbon paper shredder | | US5065947 | 29 May 1990 | 19 Nov 1991 | Invequest, Inc. | Method of shredding carbon paper | | US5161746 | 20 Mar 1991 | 10 Nov 1992 | | Reversible hammermill | | US7360725 | 31 Ago 2005 | 22 Abr 2008 | Johnson Industries, Inc. | Material crusher |
|
