CH73173A
(en )
1916-09-01
Hot water tank with electric heating
CH69901A
(en )
1915-08-02
Electric hot water heating with heat storage
CH73071A
(en )
1917-01-02
Tiled stove with electric heating
AU214916B
(en )
1917-02-27
Improvements in water heaters particularly applicable forbath purposes
CH57444A
(en )
1913-01-02
Hot water heating system with circulation pump
CH72800A
(en )
1916-07-01
Electric heater for running water
CH74829A
(en )
1917-04-16
Electric cooker with heat storage
CH75032A
(en )
1917-05-16
Electric liquid heater
CH75320A
(en )
1917-07-02
Electric liquid heater
AU109516B
(en )
1917-09-11
Improvements in domestic water heaters
CH75749A
(en )
1917-09-17
Hot water reservoir with electric liquid heater
CH79433A
(en )
1918-11-16
Hot water reservoir with electric liquid heater
AT75569B
(en )
1919-02-25
Electric heating stove.
CH71899A
(en )
1916-03-01
Self-cooking with electric heating
AU95916B
(en )
1917-03-27
Improvements in water heaters
CH55164A
(en )
1912-07-16
Hot water radiator with electrical heat generator
CH76897A
(en )
1918-07-16
Electric hot water central heating
CH69732A
(en )
1915-07-16
Electric water heater
FR484682A
(en )
1917-10-30
Electric water heater
AT67981B
(en )
1915-02-25
Electric water heater.
DK21104C
(en )
1916-03-20
Hot water heating system.
CH77870A
(en )
1918-06-01
Electric heater for running water
CH71294A
(en )
1915-12-16
Electric heating and heat accumulation process using hot water heating
AT60785B
(en )
1913-08-25
Electric water heater.
CH70019A
(en )
1915-08-16
Feed water heater