3391424

Information

• Patent Grant
• 3391424

• References
• Source

• Patent Number

  3,391,424

• Date Filed

  Not available

• Date Issued

  Tuesday, July 9, 1968
  56 years ago

• CPC

  • B26F1/0038 - from the inside
  • B29C47/126 - using dies or die parts movable in a closed circuit
  • B29C49/0021 - using moulds or mould parts movable in a closed path
  • B29C47/0023 - Hollow rigid articles having only one tubular passage
  • B29C47/0033 - Articles having longitudinal irregularities
  • B29C2793/0045 - Perforating

• US Classifications

  • 425 - Plastic article or earthenware shaping or treating: apparatus