3711199

Information

• Patent Grant
• 3711199

• References
• Source

• Patent Number

  3,711,199

• Date Filed

  Not available

• Date Issued

  Tuesday, January 16, 1973
  52 years ago

• CPC

  • G03B27/523 - for full time exposure
  • G03G15/041 - with variable magnification

• US Classifications

  • 355 - Photocopying