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Mortar
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Patent number 4,762,047
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Issue date Aug 9, 1988
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Esperanza y Cia
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Inigo Arana Ibarra
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F41 - WEAPONS
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Mortar
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Patent number 4,744,283
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Issue date May 17, 1988
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Esperanza y Cia, S.A.
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Inigo A. Ibarra
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F41 - WEAPONS
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Mortar shell time fuse
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Patent number 4,699,057
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Issue date Oct 13, 1987
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Esperanza y Cia., S.A.
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Inigo A. Ibarra
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F42 - AMMUNITION BLASTING
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Shell for firing practice
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Patent number 4,694,755
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Issue date Sep 22, 1987
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Esperanza y Cia, S.A.
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Inigo A. Ibarra
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F42 - AMMUNITION BLASTING