3593432

Information

• Patent Grant
• 3593432

• References
• Source

• Patent Number

  3,593,432

• Date Filed

  Not available

• Date Issued

  Tuesday, July 20, 1971
  54 years ago

• CPC

  • G09B1/00 - Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways
  • G03B21/64 - Means for mounting individual pictures to be projected
  • A63F2250/282 - Kinematic effects

• US Classifications

  • 434 - Education and demonstration
  • 352 - Optics: motion pictures