FR692111A
(en )
1930-10-30
Hot water heater
DK45373C
(en )
1932-03-14
Tubular, horizontal Heater for hot water radiators, water tanks, bathtubs etc.
DK41441C
(en )
1930-01-06
Heat Consumption Meters for Radiators.
SU12903A1
(en )
1930-01-31
Device for feeding steam boilers with simultaneous water heating
DK41325C
(en )
1929-12-23
Hot water boilers.
GR1751B
(en )
1928-02-17
ECONOMIC WATER HEATER.
FR683941A
(en )
1930-06-19
Hot water central heating boiler
DK40825C
(en )
1929-09-23
Hot water boiler for installation in rooms.
DK45771C
(en )
1932-06-06
Heater for electric water heaters.
DK41921C
(en )
1930-03-24
Radiator element for Central heating radiators.
DK45162C
(en )
1932-02-01
Water heater with electrically heated liquid.
DK42641C
(en )
1930-07-21
Water heating boiler.
ES113629A1
(en )
1929-08-01
Improvements in the heating radiators by water columns.
DK39613C
(en )
1928-12-17
Expansion tank with Hot water tank.
GR2167B
(en )
1929-02-18
HOT WATER SUPPLY SYSTEM.
DK37589C
(en )
1927-06-13
Heat meters for hot water heating systems.
DK42191C
(en )
1930-05-12
Water pipe boiler.
DK45060C
(en )
1931-12-28
Carrier for gas-fired liquid heaters.
CA280682A
(en )
1928-06-05
Hot water heater
ES110679A1
(en )
1929-02-01
Solar heater.
DK38674C
(en )
1928-04-16
Water heater, specially designed for gas heating.
DK37915C
(en )
1927-09-05
Arrangement of a hot water drainage tank at the hot water central heating system.
DK51480C
(en )
1936-04-06
Expansion tank for hot water central heating system.
AT144753B
(en )
1936-02-25
Hot water gradient storage tank.
FR665050A
(en )
1929-09-13
Improvements to water heaters, hot water bottles or similar heating devices