CPC Subgroup
F41G 1/08 with aperture
Full Title
Sighting devices (for indirect laying of fire F41G3/16; bombsights F41G3/24 ) > Rearsights > with aperture
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F41G 1/08 Sighting devices (for indirect laying of fire F41G3/16; bombsights F41G3/24 ) > Rearsights > with aperture