|
US1068175A
|
|
Producer-gas-fired shaft-kilns.
|
|
US940199A
|
|
Retort-furnace.
|
|
GB190828549A
|
|
Improvements in Kilns for Burning Limestone, Dolomite and the like.
|
|
US942013A
|
|
Gas-kiln.
|
|
GB190817609A
|
|
Improvements in Kilns for Burning Limestone, Dolomite and the like.
|
|
GB190810854A
|
|
Improvements in Gas-fired Shaft Furnaces.
|
|
GB190810155A
|
|
Improvements pertaining to the Firing of Retort of Muffle Furnaces by Means of Producer Gas.
|
|
GB190805187A
|
|
Improvements in Gas Fired Kilns.
|
|
GB190805188A
|
|
Improvements in Gas Producers.
|
|
GB190801168A
|
|
Improvements in or relating to Furnaces, Kilns and the like.
|
|
US917667A
|
|
Shaft-kiln with generator-gas firing.
|
|
GB190704478A
|
|
Improvements in Vertical Kilns for Burning Limestone and other substances.
|
|
GB190521116A
|
|
Improvements in Vertical Kilns.
|
|
GB190504245A
|
|
Improvements in Kilns for Burning Limestone, Dolomite and the like.
|
