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

Harry Campbell

Inventor

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Adjustable ladder leveling extension

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

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Umbrella, umbrella cover, and method of making

Sewing – Method of sewing – Workpiece manipulation other than straight line feeding
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2833794

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