3138311

Information

• Patent Grant
• 3138311

• References
• Source

• Patent Number

  3,138,311

• Date Filed

  Not available

• Date Issued

  Tuesday, June 23, 1964
  60 years ago

• CPC

  • B41B21/34 - with positioning mechanisms

• US Classifications

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