3840028

Information

• Patent Grant
• 3840028

• References
• Source

• Patent Number

  3,840,028

• Date Filed

  Not available

• Date Issued

  Tuesday, October 8, 1974
  50 years ago

• CPC

  • A24C5/1885 - for cigarettes with an axial air duct
  • A24C5/60 - Final treatment of cigarettes

• US Classifications

  • 131 - Tobacco