3677687

Information

• Patent Grant
• 3677687

• References
• Source

• Patent Number

  3,677,687

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1972
  52 years ago

• CPC

  • B28B1/44 - by forcing cores into filled moulds for forming hollow articles
  • B28B21/10 - using compacting means
  • B28B21/74 - Producing pipe bends, sockets, sleeves Moulds therefor

• US Classifications

  • 425 - Plastic article or earthenware shaping or treating: apparatus