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| US5912427 | 31 Ene 1995 | 15 Jun 1999 | Quantic Industries, Inc. | Semiconductor bridge explosive device |
| US5992326 | 5 Dic 1997 | 30 Nov 1999 | The Ensign-Bickford Company | Voltage-protected semiconductor bridge igniter elements |
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| US6272993 | 24 Ago 2000 | 14 Ago 2001 | R.A. Brands, LLC | Electric primer |
| US6487972 | 10 Feb 2000 | 3 Dic 2002 | RA Brands, LLC | Electric primer |
