3796491

Information

• Patent Grant
• 3796491

• References
• Source

• Patent Number

  3,796,491

• Date Filed

  Not available

• Date Issued

  Tuesday, March 12, 1974
  50 years ago

• CPC

  • G03B27/80 - in dependence upon automatic analysis of the original
  • G01J1/4223 - specially adapted for copy - or printing apparatus

• US Classifications

  • 355 - Photocopying
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 356 - Optics: measuring and testing