NO851210L
(no )
1985-09-30
Oppvarmingsanordning
NO131902B
(de )
1975-05-12
US2034473A
(en )
1936-03-17
Steam cooking and hot water heating system
US2179496A
(en )
1939-11-14
Water heater
US1621736A
(en )
1927-03-22
Domestic steam-generating apparatus
GB411975A
(en )
1934-06-21
Improvements in steam cookers
NO115093B
(de )
1968-07-22
GB574509A
(en )
1946-01-08
Improvements in or relating to water heaters and steam cookers
US1357100A
(en )
1920-10-26
Food-heater
US1441201A
(en )
1923-01-09
Storage water-heating system
US1244775A
(en )
1917-10-30
Water-heater.
NO832502L
(no )
1983-07-08
Oppvarmingssystem.
US1510268A
(en )
1924-09-30
Coffee-urn-heating device
GB513820A
(en )
1939-10-23
Improvements in or relating to electric water heaters
US1388684A
(en )
1921-08-23
Water-heater
NO132106B
(de )
1975-06-09
SU7688A1
(ru )
1929-01-31
Прибор дл парового отоплени , обслуживаемый горелкою типа "Примус"
ES245861A1
(es )
1959-06-01
Nuevo calentador de agua para cocinas de petrëleo
GB398347A
(en )
1933-09-14
Improvements in domestic or like hot water supply systems
GB366802A
(en )
1932-02-11
Improvements relating to the heating of water and other liquids
GB468811A
(en )
1937-07-13
Improvements in or relating to water heaters and steam cookers
GB423820A
(en )
1935-02-08
Improvements connected with electric water heaters
GB449948A
(en )
1936-07-07
Improvements in or relating to heating apparatus for liquids
GB424520A
(en )
1935-02-22
Improvements relating to the storage cylinders of hot water installations
GB800720A
(en )
1958-09-03
Improvements relating to water heating systems