3473449

Information

• Patent Grant
• 3473449

• References
• Source

• Patent Number

  3,473,449

• Date Filed

  Not available

• Date Issued

  Tuesday, October 21, 1969
  55 years ago

• CPC

  • B31B1/56 - by rotary members co-operating with blades
  • B31B2201/2679 - by rotary members co-operating with blades
  • Y10S493/917 - Envelope
  • Y10S493/919 - having window

• US Classifications

  • 493 - Manufacturing container or tube from paper
  • 271 - Sheet feeding or delivering