1423289

Information

• Patent Grant
• 1423289

• References
• Source

• Patent Number

  1,423,289

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1922
  102 years ago

• CPC

  • B44B3/002 - using a pantograph
  • B44B3/066 - Master copy holders

• US Classifications

  • 033 - Geometrical instruments