3359421

Information

• Patent Grant
• 3359421

• References
• Source

• Patent Number

  3,359,421

• Date Filed

  Not available

• Date Issued

  Tuesday, December 19, 1967
  56 years ago

• CPC

  • H01J47/10 - Spark counters

• US Classifications

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