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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F02D
CONTROLLING COMBUSTION ENGINES
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9/00
Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
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F02D9/08
Throttle valves specially adapted therefor; Arrangements of such valves in conduits
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F02D9/10
having pivotally-mounted flaps
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F02D9/101
Special flap shapes, ribs, bores or the like
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