DK54040C
(en )
1937-12-20
Element boiler with hiking grille for heating buildings and for hot water supply.
DK54421C
(en )
1938-03-07
Element boiler with hiking grille for heating buildings and for hot water supply.
DK52823C
(en )
1937-03-15
Heat consumption meters for radiators, hot water taps and similar heat sources.
FR801120A
(en )
1936-07-28
Hot water central heating installation
DK53618C
(en )
1937-09-20
Water heater for Heating Consumption water.
DK57594C
(en )
1940-05-14
Water heater for domestic water heating.
DK55620C
(en )
1938-12-27
Cold and hot water supply system with hot water boiler for multi-storey buildings.
FR791809A
(en )
1935-12-18
Heat recovery water heater
FR783029A
(en )
1935-07-06
Hot water heating installation, in particular district heating installation
DK49035C
(en )
1934-07-23
Combined Central Heating and Hot Water Supply Boiler.
NL48769C
(en )
1940-07-15
Hot water tap or valve with evaporative heat meter.
DK47552C
(en )
1933-07-17
Heat consumption meters for radiators, hot water taps and the like.
DK48042C
(en )
1933-11-20
Heat consumption meters for radiators, hot water taps and the like.
DK49957C
(en )
1935-03-04
Carrying device for hot water boilers for tiled stoves or other heating appliances.
DK53270C
(en )
1937-07-05
Hot water central heating system.
DK49287C
(en )
1934-09-17
Heating radiator for Hot water circulation.
FR807551A
(en )
1937-01-15
Hot water boiler
DK47562C
(en )
1933-07-24
Hot water boiler for oil heating.
FR770231A
(en )
1934-09-11
Hot water heating installation
DK49350C
(en )
1934-10-08
Device for water heaters for heating domestic water or similar.
DK53333C
(en )
1937-07-19
Construction element with Heat meters for installation in Hot water drain plugs.
FR879361A
(en )
1943-02-22
Hot water or steam central heating radiator
DK52320C
(en )
1936-10-19
System for Heating Consumption Water.
FR38804E
(en )
1931-07-31
Hot water central heating boiler
DK50301C
(en )
1935-06-03
Device for Heating Domestic Water.