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DD203407A1
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Arrangement in pcb structure for the examination of electronic circuit complexes
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DD134430A3
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Digital switching and receiving circuits with signal-related overload protection
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DE1943513A1
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Extrudable synthetics hollow profile for - windows and doors
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ES281463A1
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Improvements introduced in the construction of frames for flat construction parts (Machine-translation by Google Translate, not legally binding)
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CA590824A
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Method of butt welding hollow plastic sections enclosing hollow or end-bored solid sections of iron, metal or the like
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CA739212A
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Frames and sashes for window, door or such
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