by pneumatic or hydraulic means

Full Title

Safety devices, e.g. signalling or controlling devices for use in the discharge of coke > for discharging coke > by pneumatic or hydraulic means

Classification Context

Section:

CHEMISTRY; METALLURGY

Class:

PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT

Subclass:

DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS