4. Pipe joints or couplings
  5. With casing, lining or protector
  6. Lined

Lawrence E. Shea

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Collapsible duct coupling

Ventilation – Workstation ventilator
Patent

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Double wall fire proof duct

Stock material or miscellaneous articles – Hollow or container type article – Glass – ceramic – or sintered – fused – fired – or calcined metal...
Patent

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Fire Retardant reinforced plastic duct system

Ventilation – Having outlet airway – With air pump
Patent

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Fire-resistant reinforced plastic material and articles and meth

Stock material or miscellaneous articles – Composite – Of quartz or glass
Patent

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Fire-resistant synthetic resin composition and method

Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent

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Profile ID: LFUS-PAI-P-268982

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