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DK3738C
(en)
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Device for Setting the Duration of Phone Calls.
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DK3796C
(en)
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Apparatus for Counting Telephone Calls.
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DK5780C
(en)
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Apparatus for Counting Telephone Calls.
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DK4318C
(en)
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Apparatus for Capturing Mercury.
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DK4147C
(en)
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Telephone system with associated Device.
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DK3641C
(en)
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Apparatus for the production of Pladeis.
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DK3812C
(en)
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Device for Starting a Top.
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DK19139C
(en)
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Device for Checking the Number of Phone Calls.
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DK4165C
(en)
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Apparatus for Stretching Trousers.
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DK4272C
(en)
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Automatic telephone switching device.
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DK5850C
(en)
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Adjustable Speaker for Telephone Devices.
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DK3855C
(en)
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Procedure for Making Kalomel.
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DK10331C
(en)
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Apparatus for the automatic distribution of the expedition to telephone exchanges.
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DK7039C
(en)
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Automatic telephone setting device.
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DK10739C
(en)
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Telephone Dialing Device.
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DK12932C
(en)
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Device for Registering the Length of Telephone Calls.
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DK6526C
(en)
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Setting device for Telegraph and Telephone Stations.
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DK3653C
(en)
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Apparatus for the Development of Acetylene.
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DK7010C
(en)
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Interrupt device for Pair Phones.
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DK6354C
(en)
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Device at the Electrodes for Apparatus for the Manufacture of Nitrogen Compounds.
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DK5922C
(en)
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Calling device for automatically operating Telephone Systems.
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DK8810C
(en)
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Device for Amplification of Telephone Streams.
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FR331220A
(en)
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Button-switch for telephone ringtones
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DK6960C
(en)
|
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Apparatus for Manufacturing Chains.
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AT21080B
(en)
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Automatic telephone switch.
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