4. Metal deforming
  5. By deflecting successively-presented portions of work during...
  6. To form spiral coil

Victor De Donato

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Stairway stringers constructed of cast, readily-assembled units

Fire escape – ladder – or scaffold – Stackable – Male and female connecting means
Patent

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Tool for forming a scroll

Metal deforming – By deflecting successively-presented portions of work during... – To form spiral coil
Patent

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Profile ID: LFUS-PAI-P-1229480

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