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US4316420A
(en)
|
|
Furnace heat absorption control
|
|
US2087972A
(en)
|
|
Furnace
|
|
US2817498A
(en)
|
|
Air heater
|
|
DK141214B
(da)
|
|
Røgrørskedel med economiser.
|
|
SE176470C1
(cs)
|
|
|
|
US2383188A
(en)
|
|
Heating apparatus |
|
DK155463B
(da)
|
|
Fastbraendselskedel, isaer til trae
|
|
NO148054B
(no)
|
|
Digital-fjernmeldingssystem med minst ett firetraadslednings-avsnitt
|
|
US3580718A
(en)
|
|
Method for the utilization of hot waste gases from furnaces of metallurgical works
|
|
US2902010A
(en)
|
|
Radiant tubular heat exchanger
|
|
US3557723A
(en)
|
|
Furnace for burning wet fuels and method of operating same
|
|
US1887196A
(en)
|
|
Water heater
|
|
US1149739A
(en)
|
|
Multiple-combustion furnace.
|
|
US3110289A
(en)
|
|
Boiler with novel gas recirculation arrangement
|
|
US2071678A
(en)
|
|
Gas generating boiler for central heating
|
|
US3115122A
(en)
|
|
Vapor generating unit
|
|
US2806454A
(en)
|
|
Separately fired superheaters
|
|
US1463547A
(en)
|
|
Steam superheater |
|
US332267A
(en)
|
|
Steam boiler |
|
NO127641B
(cs)
|
|
|
|
US604484A
(en)
|
|
Hot-water heater |
|
US2287129A
(en)
|
|
Steam generator
|
|
US1914415A
(en)
|
|
Stove or air heating apparatus
|
|
US1995134A
(en)
|
|
Boiler
|
|
SU428158A1
(ru)
|
|
Котлоагрегат
|