4. Hydraulic and earth engineering
  5. Drainage or irrigation
  6. Porous or apertured pipe, flume, or tileway

Erich Wintermantel

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Method and apparatus of producing hollow profiles from multilaye

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Of varying cross-sectional area or with intermittent...
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Profile elements, particularly for supply and/or removal of subs

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway
Patent

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Profile ID: LFUS-PAI-P-643074

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