Automatic putting-out apparatus
Automatic rotating coal burning stoker
Automatic safety gas heating device
Automatic safety gas heating device
Automatic stoker
Automatic stoker
Automatic stoker
Automatic stove feed
Automatic vapor engine start-up
Automatically regulated combustion process
Autoregulation of primary aeration for atmospheric burners
Auxiliary air heater
Auxiliary combustion chamber for a turbo-compressor of a...
Auxiliary igniter and control for a furnace
Auxiliary power unit having a rotary fuel slinger
Auxilliary incinerator apparatus
Axial swirler central injection carburetor
Axially stepped double-ring combustion chamber for a gas...