4. Electricity: motive power systems
  5. Automatic and/or with time-delay means
  6. Movement, position, or limit-of-travel

David W. Winship

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Nonfriction power system for extending/retracting a structure

Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Patent

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Power system for extending and retracting a structure

Static structures (e.g. – buildings) – With stadium or auditorium feature – Seating arrangement
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1751886

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