3228743

Information

• Patent Grant
• 3228743

• References
• Source

• Patent Number

  3,228,743

• Date Filed

  Not available

• Date Issued

  Tuesday, January 11, 1966
  60 years ago

• CPC

  • G03B21/32 - Details specially adapted for motion-picture projection
  • G03B1/50 - adjustable or interchangeable
  • G03B21/46 - affording adjustment for framing

• US Classifications

  • 352 - Optics: motion pictures