DK27919C
(en )
1921-07-04
Electric Apparatus for Rapid Heating of Water.
DK25862C
(en )
1920-04-19
Apparatus for electric water heating,
DK18304C
(en )
1913-12-22
Apparatus for Heating Water.
DK29861C
(en )
1922-07-03
Electrical Apparatus for the Electrochemical Treatment of Steam.
CH73896A
(en )
1917-05-01
CH steam heating system
DK21636C
(en )
1916-11-06
Apparatus for Quick Release of Cattle.
DK21499C
(en )
1916-09-11
Apparatus for the Production of Milk-Like Emulsions.
DK21807C
(en )
1917-01-08
Apparatus for the manufacture of emulsions.
DK21013C
(en )
1916-02-14
Apparatus for Flaaning.
DK24590C
(en )
1919-06-02
Apparatus for drying liquids.
DK22507C
(en )
1917-10-08
Apparatus for cleaning boiler pipes.
DK19312C
(en )
1914-09-28
Apparatus for the production of distilled water.
DK19652C
(en )
1914-12-21
Apparatus for the production of distilled water.
DK20360C
(en )
1915-07-19
Apparatus for Photography Under Water.
DK22137C
(en )
1917-05-21
Apparatus for the manufacture of heating elements for electric irons, cooking appliances and the like.
DK14304C
(en )
1911-03-06
Method and Apparatus for Heating Water Using Electricity.
AU125316A
(en )
1917-05-22
An improved device for heating water
DK22499C
(en )
1917-10-01
Filter for Water Heaters.
DK22475C
(en )
1917-09-24
Apparatus for Laying Potatoes.
DK24191C
(en )
1919-03-10
Electric Heater.
DK32753C
(en )
1924-01-21
Apparatus for electric Heating of tap water.
DK21652C
(en )
1916-11-20
Apparatus for Treatment of Plastic Material.
DK21509C
(en )
1916-09-18
Apparatus for generating rapid electrical oscillations.
FR484682A
(en )
1917-10-30
Electric water heater
CH76897A
(en )
1918-07-16
Electric hot water central heating