GB105580A
(fr )
GB175985A
(en )
1923-06-22
Incandescent safety lamp for mines
GB119270A
(en )
1918-09-23
Improvements in or relating to Security or Locking Devices for Electric Incandescent Lamps.
GB190905158A
(en )
1909-12-09
Improvements in or applicable to Miners' Safety Lamps.
GB190517916A
(en )
1906-08-23
Improvements in Miners' Safety Lamps.
GB191508709A
(en )
1916-04-20
Improvements in Vapour Burning Lamps.
GB190519321A
(en )
1905-11-02
Improvements in and relating to Lanterns for Incandescent Gas Lighting.
GB864663A
(fr )
GB190421809A
(en )
1904-11-17
Improvements in Locks for Miners' Safety Lamps.
GB189918360A
(en )
1900-08-11
A Street Lamp-lighter's Lighting Lamp.
GB190604368A
(en )
1906-10-04
Improvements in or connected with Miners' Safety and other Enclosed Portable Lamps.
GB190602961A
(en )
1906-09-13
Improvements in or connected with Miners' Safety and other Enclosed Portable Lamps.
GB190225582A
(en )
1903-11-21
Improvements in Miners' Safety Lamps.
GB189720319A
(en )
1898-06-25
Improvements in Incandescence Gas Lighting.
GB189723058A
(en )
1897-11-13
Improvements in Petroleum Burners.
GB189800595A
(en )
1898-06-11
An Improved Miners' Lamp.
GB190423686A
(en )
1905-09-07
Improvements in Acetylene Lamps and Burners.
GB230315A
(en )
1925-03-12
Improvements in or relating to safety lamps for use in mines and the like
GB190623969A
(en )
1907-03-21
Improvements relating to Incandescence Gas Lamps.
GB189806128A
(en )
1899-01-28
Improvements in or connected with Miners' Safety Lamps.
GB421845A
(en )
1935-01-01
Improvements in or relating to miners' safety and like flame lamps
GB189806316A
(en )
1898-09-17
Improvements in and relating to Incandescent Oil Lamps.
GB191503041A
(en )
1915-12-02
Improvements in Miners' Safety Lamps.
GB190707043A
(en )
1907-12-19
Improvements in and relating to Miners' Lamps.
GB190919770A
(en )
1910-01-20
Improvements in Oil Lamps.