FR529163A
(en )
1921-11-24
Solar heat water heater
FR532486A
(en )
1922-02-04
Improvements to central heating systems by steam or hot water
FR523879A
(en )
1921-08-26
Improvements to hot water distribution systems
FR510415A
(en )
1920-12-04
Improvements to heating systems by circulation of steam or hot water
FR523999A
(en )
1921-08-27
Boiler for hot water or steam heating system
FR575978A
(en )
1924-08-08
Improvements to steam generators or boilers for water heating
FR517001A
(en )
1921-04-29
Device preventing bursts, due to frost, of central heating installations by hot water
FR512833A
(en )
1921-02-01
Boiler for water heating or steam production
FR642672A
(en )
1928-09-01
Improvements to central heating installations with hot water
FR564656A
(en )
1924-01-08
Method of establishing central heating installations by circulating hot water
FR515240A
(en )
1921-03-26
Improvements made to the establishment of boilers intended for central heating by circulation of low pressure steam, or by circulation of hot water
FR523600A
(en )
1921-08-20
Improvements to water circulation heaters
FR526345A
(en )
1921-10-06
Improvements to tubular boilers generating hot water or steam
FR815066A
(en )
1937-07-05
Hot water heating installation
FR534978A
(en )
1922-04-06
Instant and adjustable water heating system by electricity
FR594555A
(en )
1925-09-15
Improvements to central heating systems with forced circulation hot water
FR30187E
(en )
1926-03-29
Improvements to central heating systems with forced circulation hot water
FR25124E
(en )
1922-12-16
Hot water heating
FR525215A
(en )
1921-09-17
Hot water heating device applicable to an existing apartment chimney
FR526116A
(en )
1921-10-01
Improvements to tubular boilers generating hot water or steam
FR557187A
(en )
1923-08-04
Radiator for steam and hot water heating systems
FR792308A
(en )
1935-12-28
Improvements to internally heated steam generators or water heaters
FR523978A
(en )
1921-08-27
Faucet for central heating with hot water or low pressure steam
FR823237A
(en )
1938-01-17
Appliance for the production of hot water or steam by electric fireplace, applied to radiators for continuous heating
CA211708A
(en )
1921-05-24
Instantaneous hot water heater