|
US1729750A
|
|
Water-cooled port for open-hearth furnaces
|
|
US1595123A
|
|
Means and method for cooling rails
|
|
US1518459A
|
|
Method of operating blast furnaces
|
|
US1507862A
|
|
Bottom-making machine for furnaces
|
|
US1350475A
|
|
Gas-producer
|
|
US1350474A
|
|
Gas-producer
|
|
US1350472A
|
|
Gas-producer
|
|
US1350473A
|
|
Gas-producer arrangement
|
|
CA180411A
|
|
Gas main connection
|
|
CA173398A
|
|
Tar drag
|
|
US1230808A
|
|
Connection for gas-mains.
|
|
US1168570A
|
|
Tar-drag.
|
|
US959080A
|
|
Process for coking coal.
|
|
US886655A
|
|
Poker mechanism for gas-producers.
|
|
US884620A
|
|
Fuel-feeding device for gas-producing furnaces.
|
|
US898513A
|
|
Process of refining iron.
|
|
US846958A
|
|
Process of coking coal.
|
|
US855069A
|
|
Process of coking coal.
|
|
US865616A
|
|
Poker mechanism for gas-producers.
|
|
US803792A
|
|
Process of utilizing furnace-flue dust.
|
