CH230568A
(en )
1944-01-15
Heat exchanger.
DK76824C
(en )
1953-12-14
Device for steam boilers, hot water boilers, ovens or similar heat exchangers.
NL161572B
(en )
HEATING BOILER.
FR1070113A
(en )
1954-07-19
Advanced hot water central heating boiler
AT176566B
(en )
1953-11-10
Heat exchangers, in particular steam boilers
FR1095505A
(en )
1955-06-03
High pressure steam or hot water boiler
DK69902C
(en )
1949-09-19
Device for hot water boilers or low-pressure steam boilers working with under-combustion.
DK78213C
(en )
1954-10-04
Water heater or similar heat exchanger.
DK75640C
(en )
1953-03-30
Water heater or similar heat exchanger.
DK70087C
(en )
1949-10-17
Hot water boiler for gas or oil heating.
AT182716B
(en )
1955-07-25
Tubular heat exchangers, in particular radiant boilers
FR55612E
(en )
1952-09-02
Central heating boiler, hot water and low pressure steam
AT179876B
(en )
1954-10-11
Heat exchangers, especially for gas-fired liquid flow heaters
ES25548Y
(en )
1951-06-01
New stove or heating boiler.
AT170697B
(en )
1952-03-10
Combustion controller for hot water or low pressure steam boilers
DK79422C
(en )
1955-06-20
Magazine-fired hot water boiler.
DK64663C
(en )
1946-07-29
Hot water boiler or Low pressure steam boiler, preferably for Central heating systems.
DK82240C
(en )
1957-02-25
Device for heat exchangers.
DK85133C
(en )
1958-03-03
Heat exchanger, in particular radiant steam generator with coal dust firing.
DK82187C
(en )
1956-11-05
Device for incineration plants, in particular hot water or steam boiler plants.
DK73744C
(en )
1952-02-04
Heat meter for hot water pipes.
ES177644A1
(en )
1947-06-01
A HEATING RADIATOR FOR STEAM OR HOT WATER
GR11382B
(en )
1947-11-15
STAINLESS STEEL BOILERS MULTIPLE GAS CIRCULATION FOR CENTRAL HEATING.
FR909098A
(en )
1946-04-29
Economical central heating boiler with hot water or low pressure steam, fitted with regulator-recuperator devices
DK86250C
(en )
1958-09-15
Heating systems for extracting heat from the combustion chamber of a stove or similar furnace by means of hot water circulation.