3520509

Information

• Patent Grant
• 3520509

• References
• Source

• Patent Number

  3,520,509

• Date Filed

  Not available

• Date Issued

  Tuesday, July 14, 1970
  54 years ago

• CPC

  • B29C33/448 - destructible
  • B29C33/0033 - constructed for making articles provided with holes
  • Y10S249/02 - Paper core
  • Y10S425/043 - Rocket fuel core

• US Classifications

  • 249 - Static molds
  • 060 - Power plants
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 425 - Plastic article or earthenware shaping or treating: apparatus