4. Hydraulic and earth engineering
  5. Foundation
  6. Underpinning

John F. Langenbach

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Security door

Movable or removable closures – Mounted for multidirectional or oblique movement – Sequential translation and swinging
Patent

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Shoring apparatus and method

Hydraulic and earth engineering – Foundation – Underpinning
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Water powered gutter and downspout cleaning apparatus

Static structures (e.g. – buildings) – Controlled by condition responsive means
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Profile ID: LFUS-PAI-P-230867

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