3440727

Information

• Patent Grant
• 3440727

• References
• Source

• Patent Number

  3,440,727

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1969
  55 years ago

• CPC

  • B43L13/10 - Pantographic instruments for copying, enlarging, or diminishing
  • B43L13/004 - Manual lettering devices

• US Classifications

  • 033 - Geometrical instruments
  • D19 - Office supplies