CH20878A
(en )
1901-04-15
Electrical apparatus for the production of polyphase currents of a very constant frequency
CH23931A
(en )
1902-10-15
Apparatus for the manufacture of copper by electrolysis
CH14800A
(en )
1898-02-28
Advanced apparatus for the manufacture of acetylene
CH17022A
(en )
1899-03-31
New apparatus for the manufacture of acetylene
CH13521A
(en )
1897-07-15
Apparatus for the production of acetylene
CH15916A
(en )
1898-08-15
Apparatus for the manufacture of acetylene
FR340125A
(en )
1904-06-27
Apparatus for producing oscillatory electric currents
CH21150A
(en )
1901-05-31
Device for converting alternating current into direct current
CH14171A
(en )
1897-10-31
Apparatus for the production of acetylene
CH12316A
(en )
1896-11-30
New apparatus for the manufacture of acetylene
CH17343A
(en )
1899-05-31
Apparatus for the production of acetylene
CH14632A
(en )
1898-01-15
Device for the continuous production of ozone
CH24230A
(en )
1902-11-30
Apparatus for the production of fluorine
CH19189A
(en )
1900-05-31
Advanced seal for electrical conductors
FR336492A
(en )
1904-03-10
Apparatus for the production of acetylene
CH14631A
(en )
1898-01-31
Advanced apparatus for electrolysis
CH28786A
(en )
1904-06-15
Apparatus for the production of acetylene
FR325325A
(en )
1903-04-25
Advanced apparatus for the generation and electrolytic application of electric currents
CH18927A
(en )
1900-03-31
Apparatus for the electrometallurgical production of zine
CH25312A
(en )
1903-04-30
Apparatus for electric metal spraying
CH16014A
(en )
1898-09-15
Apparatus for the production of calcium carbide
FR332765A
(en )
1903-11-06
Electric meter for alternating currents
CH12477A
(en )
1896-12-31
An apparatus for the production of acetylene
CH12244A
(en )
1896-11-30
Apparatus for the production of ozone
CH18991A
(en )
1900-04-15
Apparatus for the production of acetylene gas