3687561

Information

• Patent Grant
• 3687561

• References
• Source

• Patent Number

  3,687,561

• Date Filed

  Not available

• Date Issued

  Tuesday, August 29, 1972
  52 years ago

• CPC

  • B43K8/14 - with coreless tubular writing-points
  • B43K5/14 - Exchangeable ink cartridges

• US Classifications

  • 401 - Coating implements with material supply