CH94447A
(en )
1922-08-01
Device for air combustion in an electric flame arc.
AT96399B
(en )
1924-03-26
Device for transforming an electrical direct current into another voltage.
ES78084A1
(en )
1921-07-01
Improvements in the spark plugs.
CA202461A
(en )
1920-08-03
Electrically operated air heating device
GR17B
(en )
1921-01-25
APPLIANCE FOR PREHEATING THE COMBUSTION AIR.
ES80325A1
(en )
1922-03-16
Precipitation electrode for electric gas purifiers.
CA226012A
(en )
1922-11-14
Electric device for treating air
FR556070A
(en )
1923-07-11
Device for checking the spark plugs in full operation
ES83539A1
(en )
1923-06-16
Improvements in electric incandescent lamps.
AT108631B
(en )
1928-01-25
Device for interrupting an electrical current.
ES71022A1
(en )
1919-11-16
Improvements in electric lamps.
DK31276C
(en )
1923-02-12
Regulator for Electric Lighting in Automobiles.
ES72141A1
(en )
1920-04-09
Improvements in gas generators.
ES72161A1
(en )
1920-04-09
Improvements in gas generators.
ES83014A1
(en )
1923-03-16
Power spark plug.
CA231746A
(en )
1923-06-12
Air injection for engines
FI9086A
(en )
1922-07-18
Starting device in ignition magnets
ES84780A1
(en )
1923-06-01
Improvements in spark plugs and other electrical components.
ES79272A1
(en )
1921-11-16
Improvements in incandescent electrical devices.
ES78451A1
(en )
1921-08-16
Improvements in electrical distribution facilities.
ES78452A1
(en )
1921-08-16
Improvements in electrical distribution facilities.
FR557098A
(en )
1923-08-02
Improvement in electric lamps
ES81834A3
(en )
1922-11-16
Improvements in electric lamps.
CA209381A
(en )
1921-03-08
Ignition device for gas stoves
CA230661A
(en )
1923-05-01
Device for reclaiming combustible gas