4. Communications: electrical
  5. Visual indication
  6. Audio responsive lamp

Chih-Tsung Chen

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Expandable metal body for an expansion bolt

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Bulged by axially contracting ends
Reexamination Certificate

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Expansion screw

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Made up of plural expansible segments or sections
Reexamination Certificate

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Rotary unit and illumination unit for a 3-side variable advertis

Communications: electrical – Visual indication – Audio responsive lamp
Patent

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Structure of venetian blind

Movable or removable closures – Closures interconnected for concurrent movement – Louver-type closures
Patent

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Profile ID: LFUS-PAI-P-1570623

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