4. Receptacles
  5. One-piece, reinforced open end edge
  6. Bead

Douglas C. Duffy

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Drum or pail closure

Receptacles – One-piece – reinforced open end edge – Bead
Patent

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Method of forming a drum or pail closure

Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent

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