3337728

Information

• Patent Grant
• 3337728

• References
• Source

• Patent Number

  3,337,728

• Date Filed

  Not available

• Date Issued

  Tuesday, August 22, 1967
  57 years ago

• CPC

  • H01J49/18 - using spark ionisation

• US Classifications

  • 250 - Radiant energy
  • 076 - Metal tools and implements, making