3827160

Information

• Patent Grant
• 3827160

• References
• Source

• Patent Number

  3,827,160

• Date Filed

  Not available

• Date Issued

  Tuesday, August 6, 1974
  50 years ago

• CPC

  • G09B1/40 - to form symbols or signs by appropriate arrangement

• US Classifications

  • 434 - Education and demonstration