4. Static structures (e.g., buildings)
  5. Openwork; e.g., truss, trellis, grille, screen, frame, or...
  6. Three-dimensional space-defining

World Shelters, Inc.

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Expandable and collapsible modular structure

Conveyors – chutes – skids – guides – and ways – Rollerways – Submerging and rising
Reexamination Certificate

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Expandable and collapsible modular structure

Conveyors – chutes – skids – guides – and ways – Rollerways – Submerging and rising
Reexamination Certificate

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Expandable and collapsible structure with rollers

Conveyors – chutes – skids – guides – and ways – Rollerways – Submerging and rising
Reexamination Certificate

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Expandable and collapsible structures including split...

Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Components adjustably or collapsibly connected
Reexamination Certificate

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Family of collapsible structures and a method of making a family

Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Components adjustably or collapsibly connected
Patent

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