CH50427A
(en )
1911-05-16
Device for switching gas lamps on and off
FR450134A
(en )
1913-03-15
Device for operating gas lanterns
FR411479A
(en )
1910-06-17
Device for automatically switching on and off gas burners from a distance
FR407429A
(en )
1910-02-28
Device for automatic switching on and off of gas lamps
FR415997A
(en )
1910-10-08
Device for shutting off gas lines
FR431439A
(en )
1911-11-10
Safety device for gas lamps
FR423316A
(en )
1911-04-13
Ignition device for gas burners
FR378179A
(en )
1907-09-26
Improvements made to devices for turning on and off gas lamps
FR427721A
(en )
1911-08-11
Safety device for compressed gas tanks
FR423550A
(en )
1911-04-20
Automatic device for switching on and off gas lamps
FR428807A
(en )
1911-09-08
Automatic device for switching on and off gas lamps
FR14280E
(en )
1911-10-24
Safety device for gas installations
FR428798A
(en )
1911-09-07
Safety device for gas installations
FR411288A
(en )
1910-06-13
Method and device for switching on and off gas lamps
FR15018E
(en )
1912-04-11
Safety device for gas lines
FR457091A
(en )
1913-09-11
Improvements to devices used to automatically switch gas or electric lamps on and off
FR406013A
(en )
1910-01-20
Chronometric device for switching on and off gas lamps
CH49689A
(en )
1911-03-16
Apparatus for sterilizing gases
FR15234E
(en )
1912-05-22
Automatic device device for switching on and off gas lamps
FR432811A
(en )
1911-12-16
Automatic device device for switching on and off gas lamps
FR429969A
(en )
1911-10-05
Lyre for gas lamp
FR384372A
(en )
1908-04-07
Device for remotely switching on and off electric or gas lamps
FR416122A
(en )
1910-10-12
Gas liquefaction apparatus for experiments
FR426143A
(en )
1911-06-28
Grasshopper valve for remote gas on and off
FR439897A
(en )
1912-06-26
Improvements to devices for turning on and off gas lamps