3332775

Information

• Patent Grant
• 3332775

• References
• Source

• Patent Number

  3,332,775

• Date Filed

  Not available

• Date Issued

  Tuesday, July 25, 1967
  57 years ago

• CPC

  • G03F5/12 - using other screens

• US Classifications

  • 355 - Photocopying
  • 359 - Optical: systems and elements