DK23804C
(en)
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Signal system for Telephone systems.
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DK32324C
(en)
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Signal system.
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DK28569C
(en)
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Reflector for Signal Devices.
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FR506293A
(en)
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Telephone system
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FR509020A
(en)
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Telephone system
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DK26759C
(en)
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Pipe connection for rain systems.
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AT89732B
(en)
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Telephone switching system.
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DK29868C
(en)
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Signal system for Marking Waters.
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DK32946C
(en)
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Telephone exchange system.
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DK33749C
(en)
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Telephone exchange system.
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FR494962A
(en)
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Telephone jamming system
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DK26108C
(en)
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Sounder for Sirens.
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DK32541C
(en)
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Device for automatic telephone systems.
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DK36311C
(en)
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Device for automatic telephone systems.
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DK36348C
(en)
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Device for automatic telephone systems.
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DK36536C
(en)
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Device for automatic telephone systems.
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DK22949C
(en)
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Diaphragm for Galvanic Elements.
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DK22950C
(en)
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Diaphragm for Galvanic Elements.
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AT91057B
(en)
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Transmission system.
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ES67992A1
(en)
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A construction system for boxes-containers.
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CH103343A
(en)
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Telephone installation.
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DK31688C
(en)
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Device at sound transmitter system.
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FR488814A
(en)
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Advanced pipe system
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DK32059C
(en)
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Transfer system.
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DK36142C
(en)
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Transmitter device for Signal Systems.
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