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Thermally insulated corrugated conduit
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Patent number 10,220,551
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Issue date Mar 5, 2019
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Brugg Rohr AG Holding
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Alfred Oeschger
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Coupling connection for corrugated pipes
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Patent number 9,651,177
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Issue date May 16, 2017
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Brugg Rohr AG Holding
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Helga Nielinger
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Heat-insulated conduit
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Patent number 7,472,725
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Issue date Jan 6, 2009
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Brugg Rohr AG, Holding
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Roberto Rudi
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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