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BE897499A
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Protection device for water pipes
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BE897500A
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Wide-range flow regulator for liquid in pipe - contains discs with labyrinthine channels which are rotated to increase or decrease flow rate
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BE878732A
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Fluid filter with automatic filter cleaning
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IT1206384B
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Fluid flow control system for two feed pipes - has throat section in each pipe with interconnected press. tappings membranes and valves
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FR2370316A1
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Fluid flow control system for two feed pipes - has throat section in each pipe with interconnected press. tappings membranes and valves
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NL7711514A
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Fluid flow control system for two feed pipes - has throat section in each pipe with interconnected press. tappings membranes and valves
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ES226165A1
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A provision for telephones with device connected in series with the receptor capsule (Machine-translation by Google Translate, not legally binding)
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ES223948A1
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An antenna system (Machine-translation by Google Translate, not legally binding)
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ES193461A1
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Improvements in telecommunication systems
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