4. Receptacles
  5. Closures
  6. With closure opening arrangements for means

Douglas F. Koch

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Self-opening can lid with improved contour of score

Receptacles – Closures – With closure opening arrangements for means
Patent

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Self-opening can lid with improved contour of score and means fo

Sheet metal container making – Apparatus to form container closure – Having means forming frangible zone on closure
Patent

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