2933990

Information

• Patent Grant
• 2933990

• References
• Source

• Patent Number

  2,933,990

• Date Filed

  Not available

• Date Issued

  Tuesday, April 26, 1960
  64 years ago

• CPC

  • B41B21/34 - with positioning mechanisms
  • B41B21/20 - with means for moving stepwise

• US Classifications

  • 396 - Photography
  • 352 - Optics: motion pictures