2981142

Information

• Patent Grant
• 2981142

• References
• Source

• Patent Number

  2,981,142

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1961
  63 years ago

• CPC

  • A63J15/00 - Peep-shows
  • G02B27/06 - with moving picture effect

• US Classifications

  • 359 - Optical: systems and elements