3137072

Information

• Patent Grant
• 3137072

• References
• Source

• Patent Number

  3,137,072

• Date Filed

  Not available

• Date Issued

  Tuesday, June 16, 1964
  60 years ago

• CPC

  • B43L13/048 - with T-squares
  • Y10S33/01 - Magnetic

• US Classifications

  • 033 - Geometrical instruments