3235169

Information

• Patent Grant
• 3235169

• References
• Source

• Patent Number

  3,235,169

• Date Filed

  Not available

• Date Issued

  Tuesday, February 15, 1966
  59 years ago

• CPC

  • B31B29/84 - Forming valves or applying valve inserts
  • B65D31/14 - Valve bags
  • B65D31/142 - the filling port being formed by folding a flap connected to a side
  • B31B2219/9054 - Applying rigid valves, spouts, or filling tubes
  • B31B2221/20 - the bags having structural provision at the base for thickness of content
  • Y10S383/903 - Stress relief

• US Classifications

  • 383 - Flexible bags