3496321

Information

• Patent Grant
• 3496321

• References
• Source

• Patent Number

  3,496,321

• Date Filed

  Not available

• Date Issued

  Tuesday, February 17, 1970
  54 years ago

• CPC

  • G05F1/42 - discharge tubes only
  • B23H1/028 - for multiple gap machining

• US Classifications

  • 219 - Electric heating