CH42292A
(en )
1909-01-16
Combustion regulator for boilers in hot water heating systems
CH42293A
(en )
1909-01-16
Draft regulator on hot water heating systems
CH32264A
(en )
1905-09-15
Draft regulator for hot water heating systems
CH34006A
(en )
1906-02-15
Radiators for steam and water heating
AT25833B
(en )
1906-09-25
Heat regulator for steam heating.
CH38003A
(en )
1907-08-31
Articulated boiler for hot water heating
AT36284B
(en )
1909-02-25
Temperature controller for steam heating.
CH40151A
(en )
1908-06-16
Automatic draft regulating device for boiler firing of hot water heating systems
CH43281A
(en )
1909-04-16
Hot water system on stoves
CH47165A
(en )
1910-06-01
Tap with regulating device for hot water heating systems
CH41492A
(en )
1908-11-02
Heating burners for liquid fuels
DK9565C
(en )
1907-04-29
Water level regulator for steam boilers.
DK10176C
(en )
1907-11-04
Device for hot water heating systems.
FR396843A
(en )
1909-04-21
Boiler heating system
CH47083A
(en )
1910-05-16
Articulated boiler for hot water heating
DK10640C
(en )
1908-03-16
Stove with device for hot water heating.
DK10659C
(en )
1908-03-23
Hot water heater.
CH41818A
(en )
1908-12-01
Steam water drain for steam heating
CH35722A
(en )
1906-10-15
Gas-fired hot water generator
DK8655C
(en )
1906-07-16
Hot water heating system.
CH31404A
(en )
1905-03-31
Liquid fuel heater
AT23735B
(en )
1906-04-10
Hot water heating system.
DK6998C
(en )
1904-10-24
Hot water heating system.
DK16088C
(en )
1912-06-17
Arrangement of the flues in steam or hot water element boilers.
FR385468A
(en )
1908-05-13
Automatic combustion regulator in the furnaces of steam boilers