3655272

Information

• Patent Grant
• 3655272

• References
• Source

• Patent Number

  3,655,272

• Date Filed

  Not available

• Date Issued

  Tuesday, April 11, 1972
  52 years ago

• CPC

  • G09F19/18 - involving the use of optical projection means
  • A01K63/003 - Aquaria; Terraria
  • G03B21/00 - Projectors or projection-type viewers Accessories therefor
  • G09F19/10 - Devices demonstrating the action of an article to be advertised

• US Classifications

  • 359 - Optical: systems and elements
  • 352 - Optics: motion pictures