1406578

Information

• Patent Grant
• 1406578

• References
• Source

• Patent Number

  1,406,578

• Date Filed

  Not available

• Date Issued

  Tuesday, February 14, 1922
  102 years ago

• CPC

  • B28B21/86 - Cores
  • B28B7/342 - which are at least partially destroyed

• US Classifications

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