3806940

Information

• Patent Grant
• 3806940

• References
• Source

• Patent Number

  3,806,940

• Date Filed

  Not available

• Date Issued

  Tuesday, April 23, 1974
  50 years ago

• CPC

  • D06H3/02 - visually
  • G01N21/8983 - for testing textile webs

• US Classifications

  • 073 - Measuring and testing
  • 307 - Electrical transmission or interconnection systems
  • 315 - Electric lamp and discharge devices: systems
  • 340 - Communications: electrical
  • 362 - Illumination