3447868

Information

• Patent Grant
• 3447868

• References
• Source

• Patent Number

  3,447,868

• Date Filed

  Not available

• Date Issued

  Tuesday, June 3, 1969
  57 years ago

• CPC

  • G03B1/22 - Claws or pins engaging holes in the film
  • G03B21/46 - affording adjustment for framing

• US Classifications

  • 352 - Optics: motion pictures
  • 226 - Advancing material of indeterminate length