F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
F01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
F01L
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
F01L
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
F01L1/00
Valve-gear or valve arrangements, e.g. lift-valve gear
F01L1/00
Valve-gear or valve arrangements, e.g. lift-valve gear