3327865

Information

• Patent Grant
• 3327865

• References
• Source

• Patent Number

  3,327,865

• Date Filed

  Not available

• Date Issued

  Tuesday, June 27, 1967
  57 years ago

• CPC

  • E21B43/086 - Screens with preformed openings
  • B01D29/012 - Making filtering elements
  • B01D29/111 - Making filtering elements
  • B29C67/0011 - for shaping plates or sheets
  • B29C69/00 - Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00
  • B29D28/00 - Producing nets or the like
  • E03B3/20 - of elements of special shape
  • B01D2201/02 - Filtering elements having a conical form
  • B29C47/0019 - Flat rigid articles
  • B29C47/0021 - Flat flexible articles
  • B29C47/003 - Articles having cross-sectional irregularities
  • B29C47/0033 - Articles having longitudinal irregularities
  • B29C47/0038 - Combined shaping operations
  • B29C47/004 - Extrusion moulding combined with compression moulding
  • B29C47/0054 - Extrusion moulding combined with blow-moulding or thermoforming

• US Classifications

  • 210 - Liquid purification or separation
  • 166 - Wells