CH450A
(en )
1889-03-25
Electric light bulb for series connection
CH433A
(en )
1889-03-25
Holders for electric light bulbs
CH2588A
(en )
1891-02-14
Innovation in incandescent bodies for electric light bulbs
CH2531A
(en )
1891-02-14
Innovation in incandescent bodies for electric light bulbs
CH2586A
(en )
1891-02-14
Innovation in incandescent bodies for electric light bulbs
CH2587A
(en )
1891-02-14
Innovation in incandescent bodies for electric light bulbs
CH2530A
(en )
1891-02-14
Innovation in incandescent bodies for electric light bulbs
CH21068A
(en )
1901-05-31
Electric light bulb
ES9263A1
(en )
1889-04-16
For improvements in lighting by means of incandescent electric lamps.
CH1365A
(en )
1889-11-30
Electric contact lamp with movable electrodes
CH74281A
(en )
1917-02-01
Base for electric light bulbs
CH2537A
(en )
1891-02-14
Innovation in incandescent bodies for electric vacuum light bulbs
CH2591A
(en )
1891-01-31
Electric arc lamp
CH7241A
(en )
1894-02-15
Suspension device for electric light bulbs
CH13453A
(en )
1897-06-30
Reflector for electric light bulbs
CH4051A
(en )
1892-02-15
Electric light bulb without platinum
CH2483A
(en )
1890-11-15
Automatic electrical lighting apparatus for medical purposes
ES13857A1
(en )
1892-12-01
Improvements made to the supports applied to incandescent electric lamps.
CH5668A
(en )
1893-02-15
Two-part holder for electric light bulbs
ES9136A2
(en )
1889-05-16
Lamps improvements.
CH1208A
(en )
1889-10-31
Candle carrier
CH31375A
(en )
1905-03-31
Electric light bulb
CH16133A
(en )
1898-09-30
Electric light bulb
CH18081A
(en )
1899-10-31
Electric light bulb
CH22553A
(en )
1902-02-28
Novel filament for electric light bulbs