3520749

Information

• Patent Grant
• 3520749

• References
• Source

• Patent Number

  3,520,749

• Date Filed

  Not available

• Date Issued

  Tuesday, July 14, 1970
  54 years ago

• CPC

  • B29C47/58 - Details
  • B28B23/046 - Post treatment to obtain pre-stressed articles
  • B29C47/0019 - Flat rigid articles
  • B29C47/0021 - Flat flexible articles
  • B29C47/0023 - Hollow rigid articles having only one tubular passage
  • B29C47/023 - Coating the inner and outer surfaces of hollow reinforcement
  • B29C53/56 - Winding and joining

• US Classifications

  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 138 - Pipes and tubular conduits
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 425 - Plastic article or earthenware shaping or treating: apparatus