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Piston for a syringe and a prefilled syringe using the same

  • US 20050137533A1
  • Filed: 09/23/2004
  • Published: 06/23/2005
  • Est. Priority Date: 12/17/2003
  • Status: Active Grant
First Claim
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1. A piston for a syringe for sealing an injection barrel filled with a medicament comprising a skirt part capable of serving as a backstop device:

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