4. Signals and indicators
  5. Flags and flagstaffs

Ou-Yang Feng

Inventor

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Advertising writing instrument

Card – picture – or sign exhibiting – Check – label – or tag – Pen- or pencil-carried indicia
Patent

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Telescopic rod means having rotatably retractable display sheet

Signals and indicators – Flags and flagstaffs
Patent

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Telescopic rod means with rolling display sheet

Signals and indicators – Flags and flagstaffs
Patent

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Profile ID: LFUS-PAI-P-327239

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