CPC Subgroup
E02C 1/06 Devices for filling or emptying locks (in lock gates E02B7/20 )
Full Title
Locks ; Shaft locks, i.e. locks of which one front side is formed by a solid wall with an opening in the lower part through which the ships pass (lock gates E02B7/20 ) > Devices for filling or emptying locks (in lock gates E02B7/20 )