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GB536614A
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Improvements in or relating to magnetic switches applicable for use in telephone selectors
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GB536100A
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Improvements in or relating to facsimile receivers
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|
GB519744A
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Improvements in or relating to electric cables
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GB522198A
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Improvements in or relating to switches of the kind used in automatic telephone systems
|
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GB522726A
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Improvements in or relating to selective switches such as are used in automatic telephone systems
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GB509816A
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Improvements in or relating to printing mechanism for use, for instance, in automatic ticketing equipment for telephone or like exchange systems
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GB410523A
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Apparatus for automatically receiving and recording alarm signals transmitted by radio
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GB404293A
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|
Improvements in or relating to automatic or semi-automatic telephone or like switching systems
|
|
GB346716A
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An improved driving arrangement for power driven switching apparatus
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|
GB335579A
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Improvements in or relating to selector switches suitable for use in telephone systems
|
|
GB333259A
|
|
Improvements in or relating to automatic and semi-automatic telephone exchange systems
|
|
GB333299A
|
|
Improvements in or relating to automatic and semi-automatic telephone exchange systems
|
|
GB333300A
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|
Improvements in or relating to testing arrangements for automatic or semi-automatic telephone systems
|
|
GB321956A
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Improved metering arrangement for telephone systems
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|
GB318944A
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|
Improvements in and relating to automatic and semi-automatic telephone exchange systems
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|
GB319063A
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|
Improvements in and relating to automatic and semi-automatic exchange systems
|
|
GB317522A
|
|
Improvements in or relating to dial switches
|
|
GB307369A
|
|
Improvements in automatic or semi-automatic telephone systems
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|
GB307368A
|
|
Improvements in automatic or semi-automatic telephone systems
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GB304813A
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Improvements in automatic or semi-automatic telephone systems
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