DK51480C
(en )
1936-04-06
Expansion tank for hot water central heating system.
DK53270C
(en )
1937-07-05
Hot water central heating system.
FR779328A
(en )
1935-04-02
Water heater
DK50118C
(en )
1935-04-08
Electric Auxiliary heating device for Hot water supply system.
DK49287C
(en )
1934-09-17
Heating radiator for Hot water circulation.
DK47562C
(en )
1933-07-24
Hot water boiler for oil heating.
DK45771C
(en )
1932-06-06
Heater for electric water heaters.
DK55558C
(en )
1938-12-12
Traction regulator for hot water heating systems.
DK53793C
(en )
1937-11-01
Traction regulator for hot water central heating boilers.
DK52670C
(en )
1937-02-08
Radiator for Central heating system.
DK52320C
(en )
1936-10-19
System for Heating Consumption Water.
DK53618C
(en )
1937-09-20
Water heater for Heating Consumption water.
DK54626C
(en )
1938-04-19
Hot water supply system.
DK49350C
(en )
1934-10-08
Device for water heaters for heating domestic water or similar.
DK48380C
(en )
1934-02-12
Radiator for Central heating system.
CA347863A
(en )
1935-01-29
Hot water heating system
FR43994E
(en )
1934-09-25
Domestic heating system
DK52231C
(en )
1936-09-28
Heating system.
ES2079Y
(en )
1934-03-16
Heating radiators.
DK56287C
(en )
1939-06-12
Hot water boiler, preferably for Central heating systems.
DK46700C
(en )
1933-01-02
Water heating tank.
FI15673A
(en )
1934-02-02
Water heater for central heating or hot water supply
DK50297C
(en )
1935-06-03
Device by Water Heating Tanks for Heating Consumption Water.
DK49035C
(en )
1934-07-23
Combined Central Heating and Hot Water Supply Boiler.
DK51554C
(en )
1936-04-27
Steam boiler or Water heater.