DK53333C
(en )
1937-07-19
Construction element with Heat meters for installation in Hot water drain plugs.
FR680819A
(en )
1930-05-06
Heat consumption meter for radiators
FR566675A
(en )
1924-02-18
Hot, cold and warm water faucet
FR753758A
(en )
1933-10-24
Advanced heat meter
FR779328A
(en )
1935-04-02
Water heater
DK52823C
(en )
1937-03-15
Heat consumption meters for radiators, hot water taps and similar heat sources.
FR783029A
(en )
1935-07-06
Hot water heating installation, in particular district heating installation
NL48769C
(en )
1940-07-15
Hot water tap or valve with evaporative heat meter.
DK46691C
(en )
1932-12-27
Equipped with electric heating device Drain tap for water pipes.
FR770231A
(en )
1934-09-11
Hot water heating installation
DK51480C
(en )
1936-04-06
Expansion tank for hot water central heating system.
FR791809A
(en )
1935-12-18
Heat recovery water heater
DK40825C
(en )
1929-09-23
Hot water boiler for installation in rooms.
DK55620C
(en )
1938-12-27
Cold and hot water supply system with hot water boiler for multi-storey buildings.
FR801120A
(en )
1936-07-28
Hot water central heating installation
DK47562C
(en )
1933-07-24
Hot water boiler for oil heating.
DK39613C
(en )
1928-12-17
Expansion tank with Hot water tank.
DK53618C
(en )
1937-09-20
Water heater for Heating Consumption water.
FR705370A
(en )
1931-06-05
Rapid water heater
DK53793C
(en )
1937-11-01
Traction regulator for hot water central heating boilers.
FI17984A
(en )
1938-03-26
Device for connecting hot and cold water taps
DK48042C
(en )
1933-11-20
Heat consumption meters for radiators, hot water taps and the like.
DK47552C
(en )
1933-07-17
Heat consumption meters for radiators, hot water taps and the like.
DK48318C
(en )
1934-01-29
Device for Heating Consumption Water.
DK53270C
(en )
1937-07-05
Hot water central heating system.