3531716

Information

• Patent Grant
• 3531716

• References
• Source

• Patent Number

  3,531,716

• Date Filed

  Not available

• Date Issued

  Tuesday, September 29, 1970
  54 years ago

• CPC

  • G01R31/306 - of printed or hybrid circuits
  • G01R31/305 - using electron beams

• US Classifications

  • 324 - Electricity: measuring and testing
  • 250 - Radiant energy