3455217

Information

• Patent Grant
• 3455217

• References
• Source

• Patent Number

  3,455,217

• Date Filed

  Not available

• Date Issued

  Tuesday, July 15, 1969
  55 years ago

• CPC

  • B41B21/16 - Optical systems
  • H04L13/184 - Photographic printing and recording
  • H04L13/188 - Projection of the printed matter

• US Classifications

  • 396 - Photography
  • 359 - Optical: systems and elements