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GB191228095A
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Improvements in Packing for Piston Valves and Pistons.
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CA148122A
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Piston valve
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CA124517A
|
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Piston valve and piston
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US904391A
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Semi-plug piston-valve and piston.
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CA101916A
|
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Valve
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GB190616871A
|
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Improvements in Balanced Slide Valves.
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US914470A
|
|
Balanced slide-valve.
|
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CA100656A
|
|
Packing for piston rods
|
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GB190612992A
|
|
Improvements in Packing for Piston Valves and Pistons.
|
|
US898617A
|
|
Packing for pistons and piston-valves.
|
|
GB190327523A
|
|
Improvements in Packing for PistonS and Piston Valves.
|
|
GB190126221A
|
|
Improvements in Balanced Slide-valves for Steam Engines.
|
|
GB190013762A
|
|
Improvements in Slide Valves.
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|
GB190009192A
|
|
Improvements in Piston Valves, also applicable to Pistons generally.
|
|
GB189701747A
|
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Improvements in Railway Fog-signalling Apparatus.
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