1399308

Information

• Patent Grant
• 1399308

• References
• Source

• Patent Number

  1,399,308

• Date Filed

  Not available

• Date Issued

  Tuesday, December 6, 1921
  103 years ago

• CPC

  • B28B21/86 - Cores

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 138 - Pipes and tubular conduits