CH82923A
(en )
1919-11-01
Procedure for venting electric light bulbs and other glass vessels
CH73508A
(en )
1916-10-16
Method and device for venting electric incandescent lamps and other glass vessels
CH77704A
(en )
1918-05-16
Platinum-free fuse wire for incandescent lamps and apparatus with an oxygen-free glass envelope and the process for producing this wire
CH58517A
(en )
1913-03-17
Device for regenerating electric light bulbs
CH70212A
(en )
1915-09-01
Method of replacing the filaments of electric light bulbs
DK20159C
(en )
1915-05-10
Procedure for Repairing Burnt Out Electric Light Bulbs.
CH76908A
(en )
1918-02-16
Burning briquette and process for making the same
CH73965A
(en )
1916-12-16
Incandescent bodies for electric light bulbs
CH78641A
(en )
1918-12-16
Process for making electric ovens
AT77282B
(en )
1919-07-25
Process for removing moisture residues from electric light bulbs with metallic luminous bodies.
CH70797A
(en )
1915-10-16
Process for making diaphanous watercolors
CH71627A
(en )
1916-02-01
Holders for electric light bulbs
FI6264A
(en )
1916-02-10
Incandescent oven
DK28493C
(en )
1921-09-26
Method and apparatus for evacuating electric filament lamps and filament lamp suitable for the procedure and method and apparatus for its manufacture.
CH73445A
(en )
1916-10-02
Process for eliminating furnace smoke
CH72955A
(en )
1917-01-02
Process for creating electric arc furnaces
CH76062A
(en )
1917-11-01
Method for fusing together glass objects
FR483081A
(en )
1917-05-25
Electric lamp saver
CH75854A
(en )
1917-10-01
Process for the manufacture of electric radiators
CH74730A
(en )
1917-04-02
Device for making ropes
FR487119A
(en )
1918-06-05
Lamp cap
CH68893A
(en )
1915-05-01
Electric gas lamp and method of making the same
FR483008A
(en )
1917-05-23
Lamps
CH65625A
(en )
1914-07-01
Method and device for manufacturing electric incandescent lamps
FR520036A
(en )
1921-06-18
Improvements in incandescent electric lamps