|
| US4255173 | 27 Dic 1977 | 10 Mar 1981 | Texaco Inc. | Lead filter for internal combustion engine exhaust gases |
| US4344784 | 27 Feb 1981 | 17 Ago 1982 | Dexon, Inc. | Filter assembly for clean air rooms and work stations |
| US4348362 | 24 Sep 1980 | 7 Sep 1982 | Minnesota Mining and Manufacturing Company | Air pollution control apparatus and process |
| US4361423 | 3 Nov 1980 | 30 Nov 1982 | NKN | Combination acoustical muffler and exhaust converter |
| US4416674 | 22 Mar 1982 | 22 Nov 1983 | Texaco Inc. | Filter for treating a particle-carrying gaseous stream |
| US4786299 | 10 Mar 1987 | 22 Nov 1988 | | Vacuum loader with silencer base |
| US5504281 | 21 Ene 1994 | 2 Abr 1996 | Minnesota Mining and Manufacturing Company | Perforated acoustical attenuators |
| US5753013 | 23 Dic 1996 | 19 May 1998 | | Gas drying apparatus and method |
| US5882383 | 13 May 1998 | 16 Mar 1999 | | Gas drying apparatus |
| US6569217 | 10 May 2000 | 27 May 2003 | Thomas M. DeMarco | Industrial dust collector with multiple filter compartments |
| US6571910 | 20 Dic 2001 | 3 Jun 2003 | Quiet Storm, LLC | Method and apparatus for improved noise attenuation in a dissipative internal combustion engine exhaust muffler |
| US7100737 | 28 Jul 2003 | 5 Sep 2006 | Carrier Corporation | Muffler for noise reduction |
| US7549286 | 24 May 2004 | 23 Jun 2009 | Hino Motors, Ltd. | Exhaust emission control device |
