MILITARIA - SCIENCES - Jean-Baptiste MARTIN de BRETTES (1813 - Lot 70

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Lot n° 70
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MILITARIA - SCIENCES - Jean-Baptiste MARTIN de BRETTES (1813 - Lot 70
MILITARIA - SCIENCES - Jean-Baptiste MARTIN de BRETTES (1813-188?, soldier and scientist, applied himself to the military sciences) / Autograph manuscript signed, 3 p. large in-4, given at Versailles on February 25, 1859, explaining the mechanical arrangement for igniting a cannon's powder charge by means of an induction spark, illustrated with an explanatory sketch.
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