DK56287C
(en )
1939-06-12
Hot water boiler, preferably for Central heating systems.
DK50229C
(en )
1935-05-13
Heating boiler for Water, especially for Central heating systems.
CH195888A
(en )
1938-02-28
Pumpless hot water central heating system.
DK56813C
(en )
1939-10-16
Control valve for hot water heaters.
DK48359C
(en )
1934-02-05
Oil-fired Boiler for Heating Systems.
FI14746A
(en )
1932-11-18
Steam boiler, for steam or central heating installations
DK62593C
(en )
1944-08-21
Sootblower for Boilers or similar Heaters.
DK57594C
(en )
1940-05-14
Water heater for domestic water heating.
DK53270C
(en )
1937-07-05
Hot water central heating system.
DK57727C
(en )
1940-06-24
Control valve for hot water radiators.
DK55587C
(en )
1938-12-19
Hot water and central heating systems.
DK55984C
(en )
1939-03-27
Central heating boiler.
DK55375C
(en )
1938-10-24
Water heating system.
CH213589A
(en )
1941-02-28
Boiler for hot water heating with hot water preparation.
DK56522C
(en )
1939-08-07
Valve for built-in Central heating pipes.
DK53793C
(en )
1937-11-01
Traction regulator for hot water central heating boilers.
DK55558C
(en )
1938-12-12
Traction regulator for hot water heating systems.
DK61208C
(en )
1943-08-09
Boiler with Heat exchanger, especially for Central heating.
DK56174C
(en )
1939-05-15
Water heater for Bathrooms.
DK36464C
(en )
1926-08-30
Boiler for Central heating system.
DK52670C
(en )
1937-02-08
Radiator for Central heating system.
GR5470B
(en )
1935-10-17
IN-SITE HEATING SYSTEM, WATER SPRING WATER.
DK59919C
(en )
1942-06-29
Hot water boiler.
DK47562C
(en )
1933-07-24
Hot water boiler for oil heating.
DK54626C
(en )
1938-04-19
Hot water supply system.