DK32753C
(en )
1924-01-21
Apparatus for electric Heating of tap water.
DK30713C
(en )
1922-11-20
Gas Production Apparatus.
DK29795C
(en )
1922-06-26
Apparatus for Measuring Heat Amounts.
DK31135C
(en )
1923-01-22
Apparatus for electric Heating of tap water or other Liquid.
DK31137C
(en )
1923-01-22
Apparatus for Heating Flowing Liquids Using Electric Power.
DK30800C
(en )
1922-11-27
Portable Apparatus for Economical Generation of Heat.
DK32460C
(en )
1923-11-05
Device for automatic regulation of electric heaters.
DK35896C
(en )
1926-04-19
Apparatus for Softening Water.
DK34315C
(en )
1925-03-30
Apparatus for Softening Water.
FR528006A
(en )
1921-11-05
Water heater
DK31906C
(en )
1923-06-25
Apparatus for Treating Margarine.
DK31346C
(en )
1923-02-26
Apparatus for Utilizing Wind Power for Generating Heat.
DK29247C
(en )
1922-01-30
Apparatus for the Manufacture of Margarine.
DK27216C
(en )
1921-02-28
Apparatus for Heating Living Rooms.
DK39194C
(en )
1928-09-03
Apparatus for Heating Water.
DK36962C
(en )
1926-12-27
Apparatus for automatic interruption of heat generation.
FR527809A
(en )
1921-10-31
Improvements to central heating installations
AU1589120B
(en )
1921-04-19
An improved device for heating water andother liquids by electricity
DK30362C
(en )
1922-10-02
PROCEDURE FOR MANUFACTURE OF ELECTRIC HEATERS AND HEATERS.
DK27212C
(en )
1921-02-28
Apparatus for heating cattle feed.
DK29922C
(en )
1922-07-10
Apparatus for Home Brewing of Beer.
DK31296C
(en )
1923-02-12
Apparatus for Sealing Heating Pipes in Boiler Walls.
DK26820C
(en )
1920-11-01
Procedure for Treating Coffee.
DK33718C
(en )
1924-09-29
Apparatus for heating water and other liquids.
DK35498C
(en )
1926-01-18
Method and Apparatus for Continuous Softening of Water.