4. Card, picture, or sign exhibiting
  5. Changing exhibitor
  6. Interchangeable plate

David Brian Johnson

Inventor

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Display apparatus

Card – picture – or sign exhibiting – Changing exhibitor – Interchangeable plate
Patent

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Wall hanging device for holding papers

Office supplies; artists and teachers materials – Office equipment not elsewhere specified – Holder or file
Design Patent

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Profile ID: LFUS-PAI-P-1854692

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