2789905

Information

• Patent Grant
• 2789905

• References
• Source

• Patent Number

  2,789,905

• Date Filed

  Not available

• Date Issued

  Tuesday, April 23, 1957
  67 years ago

• CPC

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

• US Classifications

  • 355 - Photocopying