3671112

Information

• Patent Grant
• 3671112

• References
• Source

• Patent Number

  3,671,112

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1972
  52 years ago

• CPC

  • G03B17/24 - with means for separately producing marks on the film
  • G03B39/04 - using moving plate or film
  • G03B2217/243 - Optical devices

• US Classifications

  • 352 - Optics: motion pictures