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

Charles McInvale

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Manhole lift insert with frangible positioner

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Design Patent

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Two sided manhole step

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

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Two-sided manhole step

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

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Profile ID: LFUS-PAI-P-2766022

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