CH51607A
(en )
1911-09-16
Hot water boiler with indirect heating
FR19026E
(en )
1914-09-01
High speed hot water heating boiler
CH61151A
(en )
1913-09-01
Hot water boiler
AT57829B
(en )
1913-02-25
Hot water rapid circulation heating.
CH67855A
(en )
1915-01-16
Steam hot water radiator
FR442360A
(en )
1912-08-30
High speed hot water heating boiler
DK21950C
(en )
1917-02-26
Hot water heater.
CH70999A
(en )
1915-11-16
Hot water heating system
FR416600A
(en )
1910-10-24
Instant hot water cooker
AT52384B
(en )
1912-02-26
Articulated boiler for hot water heating.
CH57474A
(en )
1913-01-02
Cooking stove with articulated boiler for hot water heating
AT52280B
(en )
1912-02-26
One-pipe hot water heating with pump operation.
DK18745C
(en )
1914-04-27
Hot water boiler.
NL1632C
(en )
1916-10-16
Improved steam heater
FR414223A
(en )
1910-08-29
Boiler for steam or hot water heating
ES61077A3
(en )
1915-11-16
Hot water heating boiler.
DK16917C
(en )
1913-01-27
Water heater with flat heating surfaces.
CH57444A
(en )
1913-01-02
Hot water heating system with circulation pump
DK16088C
(en )
1912-06-17
Arrangement of the flues in steam or hot water element boilers.
CH59604A
(en )
1913-05-16
Steam heating installation
FR436103A
(en )
1912-03-19
Sectional boiler for water or steam central heating
CA140577A
(en )
1912-05-21
Hot water heater or boiler
CH64659A
(en )
1914-04-16
Electrically heated hot water bottle
FR403504A
(en )
1909-11-06
Hot water central heating with thermo-siphon
CH47083A
(en )
1910-05-16
Articulated boiler for hot water heating