Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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F01C
ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
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20/00
Control of, monitoring of, or safety arrangements for, machines or engines
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F01C20/10
characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
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F01C20/14
using rotating valves
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