FR1278188A
(en )
1961-12-08
Water heater
BE576285A
(en )
1959-07-01
Improvements to combined water heating and central heating systems.
CH412262A
(en )
1966-04-30
Instantaneous water heater
CH344831A
(en )
1960-02-29
Combined heating and water heating system
FR1279135A
(en )
1961-12-15
Water heater
FR74273E
(en )
1960-11-07
Improvements to appliances for heating and hot water service or similar applications
FR1254195A
(en )
1961-02-17
Hot water heating installation
FR1317247A
(en )
1963-02-08
Improvements to hot water heating systems
FR1329090A
(en )
1963-06-07
Improvements to heating and hot water production systems
FR1284727A
(en )
1962-02-16
Central Heating Installation Pipe Fittings Improvements
FR1214089A
(en )
1960-04-06
Heating installation boiler
CA610300A
(en )
1960-12-13
Continuous flow water heater
FR74813E
(en )
1961-03-03
Improvements made to hot water production devices, in particular central heating installations
FR1201596A
(en )
1960-01-04
Improvements to central heating installations
FR1178285A
(en )
1959-05-05
Hot water central heating installation
DK102537C
(en )
1965-09-06
Combined domestic hot water and radiator system.
FR1208949A
(en )
1960-02-26
Heating and hot water production installation
BE597668A
(en )
1961-03-15
Installation of central heating and hot water distribution.
FR75191E
(en )
1961-05-12
Improvements made to hot water generators
CA605119A
(en )
1960-09-13
Hot water heater
CA591789A
(en )
1960-02-02
Hot water heating system
FR1285320A
(en )
1962-02-23
Improvements to hot water production devices
CA537901A
(en )
1957-03-05
Hot water heating system
CA549558A
(en )
1957-12-03
Hot water heating system
FR1264646A
(en )
1961-06-23
Improvements to heating systems