3506356

Information

• Patent Grant
• 3506356

• References
• Source

• Patent Number

  3,506,356

• Date Filed

  Not available

• Date Issued

  Tuesday, April 14, 1970
  54 years ago

• CPC

  • G01N21/8803 - Visual inspection
  • B41F33/02 - Arrangements of indicating devices
  • G03B41/04 - with optical compensator

• US Classifications

  • 356 - Optics: measuring and testing
  • 359 - Optical: systems and elements