3807880

Information

• Patent Grant
• 3807880

• References
• Source

• Patent Number

  3,807,880

• Date Filed

  Not available

• Date Issued

  Tuesday, April 30, 1974
  50 years ago

• CPC

  • B43K1/00 - Nibs Writing-points
  • B43K1/06 - Tubular writing-points
  • B43K5/005 - Pen barrels
  • B43K5/08 - with ink-supplying valves
  • B43K5/145 - with valves
  • B43K5/18 - Arrangements for feeding the ink to the nibs
  • B43K8/00 - Pens with writing-points other than nibs or balls
  • B43K8/143 - Arrangements for feeding the ink to the writing-points
  • B43K8/146 - Ink cartridges, ink reservoirs
  • B43K11/00 - Filling devices

• US Classifications

  • 401 - Coating implements with material supply