NL22C
(en )
1913-08-01
Method and apparatus for applying the filaments of electric incandescent lamps to the support piece
NL41C
(en )
1913-10-15
Improvement of a method and an apparatus for applying the filament of electric metal wire lamps to the wire carriers
CH58515A
(en )
1913-03-17
Method and device for laying the wire-shaped filament of electric incandescent lamps on the support frame
CH59993A
(en )
1913-06-16
Method and device for the full utilization of the heating gases
NL1712C
(en )
1916-11-15
Method and device to increase the useful light effect of hanging gas incandescent lamps
CH54274A
(en )
1912-05-17
Method and device for the production of mica sheets
NL475C
(en )
1915-02-01
Process for treating suspended substances
NL1339C
(en )
1916-06-15
Method and apparatus for examining cord circuits
CH58514A
(en )
1913-03-17
Process and device for the production of tungsten wires of the finest diameter
NL1447C
(en )
1916-07-15
Method and apparatus for manufacturing the bulb for electric reflector incandescent lamps
NL309C
(en )
1914-08-01
Method of preforming metal wires for electric incandescent lamps
CH68991A
(en )
1915-05-17
Process and apparatus for the production of black lead
CH58301A
(en )
1913-03-01
Electrical installation for the optional operation of apparatus
NL382C
(en )
1914-10-15
Process for the preparation of erythrene
AU237911B
(en )
1912-08-13
New method of and apparatus for illuminating objects
FR482907A
(en )
1917-05-11
Method and apparatus for drying
CH68557A
(en )
1915-04-01
Method and device for the production of moment X-rays
CH53490A
(en )
1912-03-01
Method and device for the production of insulating pipes
CH70203A
(en )
1915-09-01
Method and device for the manufacture of flexible electrical cables
CH68893A
(en )
1915-05-01
Electric gas lamp and method of making the same
CH76908A
(en )
1918-02-16
Burning briquette and process for making the same
CH55203A
(en )
1912-07-16
Process for the production of low-nicotine and light tobacco
FR432197A
(en )
1911-11-30
Method and device for the manufacture of electric incandescent lamps
NL1356C
(en )
1916-07-01
Method for manufacturing metal wires for electric light bulbs
CH73339A
(en )
1916-09-16
Device for the resilient suspension of lighting fixtures on ceilings