Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F41
WEAPONS
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F41B
WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
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11/00
Compressed-gas guns, e.g. air guns; Steam guns
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F41B11/60
characterised by the supply of compressed gas
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F41B11/64
having a piston effecting a compressor stroke during the firing of each shot
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F41B11/642
the piston being spring operated
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F41B11/646
Arrangements for putting the spring under tension
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