3358916

Information

• Patent Grant
• 3358916

• References
• Source

• Patent Number

  3,358,916

• Date Filed

  Not available

• Date Issued

  Tuesday, December 19, 1967
  57 years ago

• CPC

  • B43L13/149 - including grids

• US Classifications

  • 235 - Registers
  • 033 - Geometrical instruments