2234457

Information

• Patent Grant
• 2234457

• References
• Source

• Patent Number

  2,234,457

• Date Filed

  Not available

• Date Issued

  Tuesday, March 11, 1941
  83 years ago

• CPC

  • B31D1/0018 - the articles being pull-tap closure discs for bottles, jars or like containers
  • D21J1/16 - Special fibreboard

• US Classifications

  • 162 - Paper making and fiber liberation