1422925

Information

• Patent Grant
• 1422925

• References
• Source

• Patent Number

  1,422,925

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1922
  102 years ago

• CPC

  • B43K23/001 - Supporting means
  • B43L9/005 - with rollers or carriages
  • B43L13/12 - Multiple writing devices

• US Classifications

  • 033 - Geometrical instruments