CH18749A
(en )
1900-02-28
Air draft regulator for boiler firing in hot water heating systems
CH18511A
(en )
1900-01-31
Automatic heat regulating device for hot water central heating systems
CH42292A
(en )
1909-01-16
Combustion regulator for boilers in hot water heating systems
CH18973A
(en )
1900-04-30
Hot water stove for gas heating
CH32264A
(en )
1905-09-15
Draft regulator for hot water heating systems
CH23078A
(en )
1902-05-31
Boilers for water heating systems
CH437E
(en )
1904-05-15
Boilers for hot water heating
CH22901A
(en )
1902-05-31
Boilers for hot water heating
GB189906714A
(en )
1900-02-03
Improvements in Exhaust Steam Heating Systems.
CH20970A
(en )
1901-05-15
Automatic draft regulator with stable steam boiler firing
CH16565A
(en )
1898-12-15
Automatic heat regulating device on hot water central heating systems
US1044132A
(en )
1912-11-12
Hot-water and steam boiler.
CH8240A
(en )
1894-10-15
Automatic regulation device for the combustion air in water and steam heating
US519133A
(en )
1894-05-01
Hot-water heating-boiler
US54940A
(en )
1866-05-22
Improvement in feed-water heaters
CH29138A
(en )
1904-07-31
Hot water central heating system with auxiliary boiler that can be heated by gas
GB191203499A
(en )
1913-02-12
Improvements in or relating to Apparatus for Heating Boiler Feed Water.
DK2824C
(en )
1900-02-26
Hot water heater with continuous air passages.
CH17317A
(en )
1899-08-31
Feed valve for steam heating
GB189903332A
(en )
1900-01-13
Improvements in Tubular Heaters for Steam, or Fuel, or Hot Water, as a Medium to Heat Air.
GB189807463A
(en )
1898-07-09
Improvements in Hot Water or Steam Heating Radiators.
FR403228A
(en )
1909-10-28
Boiler for hot water and low pressure steam heating systems
CH27265A
(en )
1903-12-31
Boilers for hot water floor heating
GB189922173A
(en )
1900-11-06
Improved Hot Water Boiler.
CH70396A
(en )
1915-09-16
Radiators for steam hot water heating systems