3722328

Information

• Patent Grant
• 3722328

• References
• Source

• Patent Number

  3,722,328

• Date Filed

  Not available

• Date Issued

  Tuesday, March 27, 1973
  51 years ago

• CPC

  • B43K8/02 - with writing-points comprising fibres, felt, or similar porous or capillary material
  • D06H1/003 - by passing a needle through the layers

• US Classifications

  • 081 - Tools
  • 401 - Coating implements with material supply