4. Buckles, buttons, clasps, etc.
  5. Separable-fastener or required component thereof
  6. Each mating member having similarly shaped, sized, and...

Raymond R. Rydman

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Apparatus for making a zipper for a reclosable thermoplastic bag

Plastic article or earthenware shaping or treating: apparatus – Preform severing means – Rotating means comprising circumferentially extending...
Patent

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Apparatus for making a zipper for a reclosable thermoplastic bag

Plastic article or earthenware shaping or treating: apparatus – Preform severing means – Severing means is perforator
Patent

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Method of making a zipper for reclosable thermoplastic bag

Metal working – Method of mechanical manufacture – Assembling or joining
Patent

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Process of making a zipper for a reclosable thermoplastic bag

Metal working – Method of mechanical manufacture – Assembling or joining
Patent

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Zipper for a reclosable thermoplastic bag and a process and appa

Buckles – buttons – clasps – etc. – Separable-fastener or required component thereof – Each mating member having similarly shaped – sized – and...
Patent

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