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GB1137317A
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Improvements in or relating to gas turbine installations
|
|
GB1153910A
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|
Improvements in and relating to Load-Controlled Invertors or Frequency Changers
|
|
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Cooling arrangement for oil-filled electric transformers or reactors
|
|
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Transformer tank construction
|
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Regulating transformer
|
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Installation of tap changing devices in transformers
|
|
GB963847A
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Improvements in and relating to high-voltage control of electric locomotives
|
|
GB937708A
|
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Improvements in or relating to regulating transformers
|
|
GB903886A
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|
Improvements in or relating to electrical control devices
|
|
US2915720A
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Transformer with a bell-shaped cover and an on-load-tap-changing device
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