3489626

Information

• Patent Grant
• 3489626

• References
• Source

• Patent Number

  3,489,626

• Date Filed

  Not available

• Date Issued

  Tuesday, January 13, 1970
  54 years ago

• CPC

  • B28B23/046 - Post treatment to obtain pre-stressed articles
  • B28B21/14 - vibrating
  • B28B23/06 - for the production of elongated articles
  • B29C67/243 - for making articles of definite length
  • B29C70/56 - Tensioning reinforcements before or during shaping
  • B29C70/865 - completely encapsulated
  • F16L9/08 - of concrete, cement, or asbestos cement, with or without reinforcement
  • F16L58/10 - by rubber or plastics
  • B29L2023/22 - Tubes or pipes

• US Classifications

  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 264 - Plastic and nonmetallic article shaping or treating: processes