2307906

Information

• Patent Grant
• 2307906

• References
• Source

• Patent Number

  2,307,906

• Date Filed

  Not available

• Date Issued

  Tuesday, January 12, 1943
  82 years ago

• CPC

  • A24D3/0245 - by winding
  • A24C5/465 - the paper tubes partially containing a filter element

• US Classifications

  • 493 - Manufacturing container or tube from paper