3453738

Information

• Patent Grant
• 3453738

• References
• Source

• Patent Number

  3,453,738

• Date Filed

  Not available

• Date Issued

  Tuesday, July 8, 1969
  55 years ago

• CPC

  • B43L13/00 - Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
  • B43L12/02 - magnetic

• US Classifications

  • 033 - Geometrical instruments