3151522

Information

• Patent Grant
• 3151522

• References
• Source

• Patent Number

  3,151,522

• Date Filed

  Not available

• Date Issued

  Tuesday, October 6, 1964
  60 years ago

• CPC

  • G03B27/66 - specially adapted for holding half-tone screens

• US Classifications

  • 396 - Photography
  • 248 - Supports