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| Powell 1879 Squib Patent | Powell's 1879 patent for a blasting squib |  Original Image |
| Total images: 125 | Last update: 1/15/12 1:18 PM | Help | |
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| Powell 1879 Squib Patent | Powell's 1879 patent for a blasting squib | Original Image |
| Total images: 125 | Last update: 1/15/12 1:18 PM | Help | |