SU25667A1
(en )
1932-03-31
Device for heating the flue air with waste gases
AT121444B
(en )
1931-02-25
Device for guiding the flue gases in ovens.
CH130015A
(en )
1929-01-02
Gas burner.
ES104283A1
(en )
1928-03-01
Rapid heating device.
ES106252A1
(en )
1928-05-01
A device for the introduction of additional air in heating boilers.
ES106215A1
(en )
1928-06-16
A heating device powered by lighting gas.
DK39092C
(en )
1928-08-06
Lifting device for the grate in central heating stoves.
ES116569A1
(en )
1930-03-16
Air heating device for dentists.
DK38924C
(en )
1928-06-25
Central heating device.
ES101503A1
(en )
1927-03-16
A ventilation device applied to cement and asbestos sheets.
DK39589C
(en )
1928-12-10
Air draft converter for locomotive boilers and the like.
ES105380A1
(en )
1928-02-01
Self-regulating mechanical temperature device.
DK39673C
(en )
1929-01-02
Device for supplying preheated air to boilers, stoves, ovens or the like.
DK45330C
(en )
1932-02-29
Air outlet device by Ventilation devices.
ES107706A1
(en )
1928-07-16
Heating device.
ES96788A3
(en )
1926-04-01
A system oven called - steam - for bakeries, confectioneries, dryers and the like.
FR654162A
(en )
1929-04-03
Heating stove
DK38479C
(en )
1928-02-27
Ignition device for Gas Stoves, Gas Stoves and the like.
DK40311C
(en )
1929-06-17
Grating device for Central heating stoves.
ES107104A1
(en )
1928-06-16
Self-regulating electric temperature device.
FR647976A
(en )
1928-12-04
Boiler with heating and cooling system
DK40159C
(en )
1929-05-21
Purifier for flue pipes.
DK43789C
(en )
1931-03-02
Ventilation device.
ES115004A1
(en )
1929-10-16
An economical central heating system with use of the calories that are wasted in the combustion of the stoves or stoves.
DK38944C
(en )
1928-07-02
Heating boiler with Heating jacket.