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DK20140C
(en)
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Selector switch for Telephone Systems.
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AT82832B
(en)
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Telephone switching system.
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AT75560B
(en)
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Telephone switching system.
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GB118133A
(en)
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Machine Switching Telephone Systems.
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DK19678C
(en)
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Telephone system.
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AT82822B
(en)
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Telephone switching system.
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DK22255C
(en)
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Selector for Making Connections in Telephone Systems.
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AT82883B
(en)
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Automatic telephone system.
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DK18509C
(en)
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Telephone handover system.
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DK19355C
(en)
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Selector for Making Connections in Telephone Systems.
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AT80094B
(en)
|
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Semi-automatic telephone system. Semi-automatic telephone system.
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AT89309B
(en)
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Telephone switching system.
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AT75556B
(en)
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Circuit for telephone systems with dialer operation.
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CH74492A
(en)
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Selector switch for telephone systems
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DK22593C
(en)
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Telephone system.
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DK18997C
(en)
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Telephone system.
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AT80136B
(en)
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Circuit arrangement for telephone systems. Circuit arrangement for telephone systems.
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AT75593B
(en)
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Circuit arrangement for telephone systems with dialer operation.
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DK22309C
(en)
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Selector device for automatic telephone switching systems.
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DK16820C
(en)
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Telephone system selector.
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DK20134C
(en)
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Time circuit breaker.
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DK20070C
(en)
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Telephone exchange system with automatic Divert.
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DK20253C
(en)
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Telephone exchange system with automatic Divert.
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FR488803A
(en)
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Automatic telephone switch
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DK20156C
(en)
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Device by Telephone Exchange Systems.
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