CH16565A
(en )
1898-12-15
Automatic heat regulating device on hot water central heating systems
CH18511A
(en )
1900-01-31
Automatic heat regulating device for hot water central heating systems
FR466931A
(en )
1914-05-28
Automatic temperature controller, applicable to steam and hot water heating systems
CH26211A
(en )
1903-08-15
Hot water heating system
CH24524A
(en )
1903-01-31
Automatic temperature control device for heating systems
CH30431A
(en )
1904-12-15
Hot water heating system
CH31713A
(en )
1905-04-30
Hot water heating system
CH32523A
(en )
1905-08-15
Hot water heating system
CH40151A
(en )
1908-06-16
Automatic draft regulating device for boiler firing of hot water heating systems
CH42292A
(en )
1909-01-16
Combustion regulator for boilers in hot water heating systems
CH47165A
(en )
1910-06-01
Tap with regulating device for hot water heating systems
FR521103A
(en )
1921-07-07
Hot water and steam heating system
DK6998C
(en )
1904-10-24
Hot water heating system.
AT23735B
(en )
1906-04-10
Hot water heating system.
FR378953A
(en )
1907-10-22
Automatic temperature controller for heating systems and other applications
CH29138A
(en )
1904-07-31
Hot water central heating system with auxiliary boiler that can be heated by gas
FR446301A
(en )
1912-12-02
Temperature regulator for steam heating systems
AT26181B
(en )
1906-10-25
Hot water heating system.
CH32258A
(en )
1905-07-15
Steam heating element with device for air circulation
FR24482E
(en )
1922-07-20
Regulating valve for steam and hot water heating systems
CH26096A
(en )
1903-07-31
Advanced hot water heating system
CH18749A
(en )
1900-02-28
Air draft regulator for boiler firing in hot water heating systems
CH70246A
(en )
1915-09-01
Radiator element with device for heating the return water in hot water heating systems
FR359809A
(en )
1906-04-05
Device for ventilation and temperature control in heating systems
GB190213246A
(en )
1903-06-04
An Improved Automatic Heat Supply Regulator