4. Building units and construction elements
  5. Stair, ladder, scaffold, or similar support
  6. Element or attachment

Wilhelm Nelles

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Expanding fixture and hammering device therefor

Static structures (e.g. – buildings) – With adjunctive means for assembly or disassembly – Structure includes tool or opening to provide access for a...
Patent

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Wall inserted step or hand box

Building units and construction elements – Stair – ladder – scaffold – or similar support – Element or attachment
Patent

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Profile ID: LFUS-PAI-P-1399325

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