GR982B
(en )
1925-07-30
IMPROVEMENTS IN OR IN RELATION TO A PRODUCTION ELECTRIC VOLTAGE VALVE.
GR830B
(en )
1925-02-11
IMPROVEMENTS IN OR IN RELATION TO SYNTHETIC ASPHALT.
GR832B
(en )
1925-02-21
IMPROVEMENTS IN OR IN RELATION TO SYNTHETIC ASPHALT.
GR1027B
(en )
1925-10-08
IMPROVEMENTS IN OR RELATING TO A CAMERA.
GR1245B
(en )
1926-07-23
IMPROVEMENTS IN OR RELATING TO A STEAM GENERATOR.
GR1056B
(en )
1925-11-19
IMPROVEMENTS IN OR RELATING TO ASPHALT EMULSIONS.
GR925B
(en )
1925-06-01
IMPROVEMENTS IN OR RELATING TO ASPHALT EMULSIONS.
FR597065A
(en )
1925-11-12
Electric steam production
FR600331A
(en )
1926-02-04
electrolyser
ES81005A1
(en )
1922-06-16
Improvements in electricity meters.
ES84094A1
(en )
1923-05-01
Improvements in electric heaters.
CH118368A
(en )
1927-01-03
Electric machine.
ES94213A1
(en )
1925-10-16
Watiometric element for induction type electricity meter.
GR238B
(en )
1922-01-17
IN RELATION TO TYPE MACHINE.
DK37747C
(en )
1927-07-25
DC electricity meters.
GR462B
(en )
1923-07-03
PERFECTIONS IN OR IN RELATION TO THE CEMENT INDUSTRY.
GR1002B
(en )
1925-08-22
IMPROVEMENTS IN OR CONCERNING THE CONSTRUCTION OF AMMONIA.
FI9288A
(en )
1922-12-08
Electric boiler
ES92772A1
(en )
1925-06-01
Improvements in electrical connections.
GR1084B
(en )
1925-12-29
IMPROVEMENTS IN ELECTRICAL CONNECTIONS.
ES81212A1
(en )
1922-07-16
Improvements in electric bulbs.
FR574033A
(en )
1924-07-04
Electric boiler
GR994B
(en )
1925-08-13
IMPROVEMENTS IN OR RELATING TO ELECTRIC WAVE TRANSMISSION.
FR571699A
(en )
1924-05-21
Electric weft
FR566882A
(en )
1924-02-22
New chipboard used in electricity