CH73262A
(en )
1916-12-16
Hot water central heating, especially floor heating, with supply and return lines above the radiators
DK18271C
(en )
1913-12-22
Hot water supply and Central heating systems.
AT75601B
(en )
1919-02-25
Water heater with hot and warm water boiler.
CH51607A
(en )
1911-09-16
Hot water boiler with indirect heating
CH57444A
(en )
1913-01-02
Hot water heating system with circulation pump
DK23495C
(en )
1918-09-09
Hot water heating system with heat collector.
AT52280B
(en )
1912-02-26
One-pipe hot water heating with pump operation.
DK23997C
(en )
1919-01-27
Regulator for the Flow of Water in District Heating Systems with Hot Water.
DK16917C
(en )
1913-01-27
Water heater with flat heating surfaces.
US1153130A
(en )
1915-09-07
Combined steam, gas, and hot-water heater.
DK24619C
(en )
1919-06-10
Hot water heater for smaller rooms.
DK22271C
(en )
1917-07-16
Heater for Hot water and Steam heating.
CH73666A
(en )
1916-11-01
Heat accumulator for hot water heating
DK15096C
(en )
1911-09-18
Hot water heating system with Pump operation.
CH76290A
(en )
1917-11-16
Room stove with water heating element for floor heating etc.
FR486098A
(en )
1918-03-06
Hot water heating system with heat accumulator
CH70251A
(en )
1915-09-01
Hot water supply system
CH70999A
(en )
1915-11-16
Hot water heating system
GB191318946A
(en )
1914-08-20
Improvements in or relating to Hot Water Heating Systems.
DK15620C
(en )
1912-02-19
Stove with water heating system.
DK21322C
(en )
1916-07-03
Heater with narrow fluid compartment.
DK21024C
(en )
1916-02-21
Easily separable boiler for hot water or steam heating systems and the like.
FI6111A
(en )
1915-07-29
Construction set for radiators for central heating in the case of thermal insulation
DK19813C
(en )
1915-02-08
Double-adjustable Adjusting tap with double conical tap duty for steam and hot water heating pipes and the like.
CH74578A
(en )
1917-03-16
Has heating furnace with superheater