1392496

Information

• Patent Grant
• 1392496

• References
• Source

• Patent Number

  1,392,496

• Date Filed

  Not available

• Date Issued

  Tuesday, October 4, 1921
  103 years ago

• CPC

  • B28B7/34 - Moulds, cores, or mandrels of special material
  • B28B7/306 - pliable or extensible
  • Y10S249/02 - Paper core

• US Classifications

  • 249 - Static molds