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| US3977311 | 22 Nov 1974 | 31 Ago 1976 | | Louver fan assembly | | US4486144 | 20 Abr 1982 | 4 Dic 1984 | | Rotating wind-guiding shell for the fan | | US5096373 | 21 Feb 1991 | 17 Mar 1992 | Sun Microsystems, Inc. | Integrated forced convection air cooling systems | | US7018175 | 4 Nov 2003 | 28 Mar 2006 | Sunonwealth Electric Machine Industry Co., Ltd. | Airflow guiding structure for a heat dissipation fan | | USD290997 | 26 Dic 1985 | 21 Jul 1987 | Hitachi, Ltd. | Electric fan | | USD543611 | 10 Abr 2006 | 29 May 2007 | Seabreeze Electric Corporation | Portable electric heater | | USD652903 | 20 Dic 2010 | 24 Ene 2012 | Perfect Union Co., Ltd. | Electric heater |
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