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GB191321670A
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An Improved Ships' Lifeboat System.
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GB191300772A
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Improvements relating to Rock Drills.
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CA146930A
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Rock drill
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GB191215779A
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A New or Improved Method of Isolating or Extracting Cellulose or Paper-pulp from Fibrous Vegetable Materials and Apparatus therefor.
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GB191212781A
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Improvements in Machines for Filling and Sealing Bottles or the like.
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GB191123103A
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Improvements relating to Rock Drills.
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GB191107229A
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Improvements in Valves for Liquids especially applicable to the Heads of Siphon Bottles.
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GB191100231A
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Improvements relating to Rock Drills.
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GB191024133A
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An Improvements relating to Rock Drills.
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GB191018165A
|
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Improvements relating to Rock Drills, and other Percussive Tools.
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GB191011263A
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Improvements relating to Conveyors.
|
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GB191008324A
|
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Improvements relating to Rotary Boring or Drilling Machines.
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GB191008325A
|
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Improvements relating to Percussive Drilling, Channelling and like Machines.
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|
GB191004392A
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Improvements relating to Percussive Mining Drills.
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|
GB190910783A
|
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An Improved Supporting Appliance for Rock and like Drills.
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|
GB190825626A
|
|
An Improvement relating to Rock Drills.
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|
GB190821082A
|
|
An Improved Percussive Hand Tool.
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|
GB190820989A
|
|
An Improved Valve for Rock Drills and Analogous Reciprocating Appliances.
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GB190811008A
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Improvements in Apparatus for Separating Cyanide, Alkaline and other Solutions from Slimes, Sand and the like.
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GB190802201A
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An Improved Hammer Drill.
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