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GB403787A
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Improvements relating to pressure reducing or controlling valves
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GB401377A
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Improvements relating to electric trolley bus brakes
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Improvements relating to spring contact fingers for electric controllers and other like electrical apparatus
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Improvements relating to electrical resistances
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GB368203A
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Improvements relating to the control of electric motors
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US1898403A
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Control of electric motors
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Improvements relating to fluid controlling valves
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GB364363A
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Improvements relating to tramway and railway vehicles
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GB350298A
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Improvements relating to tramway and railway vehicles
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Improvements relating to electric tramway or railway vehicles
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Improvements relating to the control of electric motors
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Improvements relating to automatic valves for pneumatic brake systems
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Improvements relating to brakes for tramway vehicles and other rolling stock
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Improvements relating to brakes for tramway, railway and like vehicles
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GB342097A
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Means for preventing the freezing of condensed moisture in compressed air systems
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Improvements relating to rolling stock and other vehicle wheels
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Improvements relating to trucks for tramway and other rail vehicles
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Improvements relating to automatic control devices for air compressors
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GB330709A
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Improvements relating to fluid operated brakes for tramway and other vehicles
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GB330092A
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Improvements relating to magnetic blow-out devices for electric current controllers
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