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
F01L7/00
Rotary or oscillatory slide valve-gear or valve arrangements
F01L7/00
Rotary or oscillatory slide valve-gear or valve arrangements