3648373

Information

• Patent Grant
• 3648373

• References
• Source

• Patent Number

  3,648,373

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1972
  53 years ago

• CPC

  • B43K8/00 - Pens with writing-points other than nibs or balls
  • A63H13/15 - imitating drawing or writing

• US Classifications

  • 033 - Geometrical instruments