Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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F02B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
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71/00
Free-piston engines; Engines without rotary main shaft
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F02B71/04
Adaptations of such engines for special use; Combinations of such engines with apparatus driven thereby
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