The 1888 Pinckney and Hamilton Spring Air-Gun Patent – US390311
Spring Air-Gun Patent – US390311 Long before the discovery of modern gunpowder, early humans relied on their own breath, blowguns,
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Pneumatic and Spring Arms
Setting the Stage for Modern Air Guns: The 1962 Crosman Carbon Dioxide Rifle Patent – US3,067,730
Early humans relied on their own breath, blowguns, and simple mechanical leverage to propel small projectiles long before the discovery
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