3670426

Information

• Patent Grant
• 3670426

• References
• Source

• Patent Number

  3,670,426

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1972
  53 years ago

• CPC

  • G09B9/08 - for teaching control of aircraft
  • G09B9/305 - by viewing with a camera a small-scale model of the terrain

• US Classifications

  • 434 - Education and demonstration