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US896237A
|
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Distance-lighting gas-burner valve.
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US879890A
|
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Distance-lighting gas-burner device.
|
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US862990A
|
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Pendent switch for valves.
|
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US867591A
|
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Pneumatic valve-controlling apparatus for gas-burners.
|
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US868113A
|
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Coupling device for gas-fittings.
|
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US862931A
|
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Pneumatic device for operating gas-valves.
|
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US867590A
|
|
Incandescent gas-burner.
|
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US840796A
|
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Gas-controlling device.
|
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US840795A
|
|
Apparatus for regulating gas-ports.
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US813577A
|
|
Apparatus for controlling gas-conduits.
|
|
US830919A
|
|
Device for igniting and extinguishing gas.
|
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US813576A
|
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Apparatus for lighting and extinguishing gas.
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