|
US1973968A
|
|
Waste heat boiler
|
|
US1986109A
|
|
Apparatus for removing refuse from pits
|
|
US1625276A
|
|
Stoker air control
|
|
US1778755A
|
|
Fuel-handling system
|
|
US1696144A
|
|
Stoker air control
|
|
US1708496A
|
|
Pulverized-fuel burner
|
|
US1685568A
|
|
Tile-anchoring device
|
|
US1770987A
|
|
Art of burning finely-divided fuel for the generation of steam
|
|
US1714577A
|
|
Chain grate
|
|
US1731448A
|
|
Boiler construction
|
|
US1854342A
|
|
Art of combustion and steam generation
|
|
US1734683A
|
|
Art of steam generation
|
|
US1714600A
|
|
Furnace and boiler
|
|
US1576335A
|
|
Pulverization of coal
|
|
US1736929A
|
|
Art of burning finely divided fuel
|
|
US1560519A
|
|
Handling and feeding of pulverized coal
|
|
US1714678A
|
|
Burning of fuel
|
|
US1818994A
|
|
Dust collector
|
|
US1564361A
|
|
Fuel drier
|
|
US1707335A
|
|
Art of burning pulverized coal
|
