4. Building units and construction elements
  5. Architectural stock material
  6. Construction block or brick type

Walter J. Lenson

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Erosion control device

Building units and construction elements – Architectural stock material – Construction block or brick type
Patent

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Erosion control device

Hydraulic and earth engineering – Bank – shore – or bed protection
Patent

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Zebra mussel control device for water intakes

Liquid purification or separation – Processes – Utilizing electrical or wave energy directly applied to...
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Profile ID: LFUS-PAI-P-309108

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