3666906

Information

• Patent Grant
• 3666906

• References
• Source

• Patent Number

  3,666,906

• Date Filed

  Not available

• Date Issued

  Tuesday, May 30, 1972
  52 years ago

• CPC

  • H01J37/32055 - Arc discharge
  • B23K9/0673 - Ionisation of the arc gap by means of a tension with a step front (pulses or high frequency tensions)
  • B23K35/327 - comprising refractory compounds
  • C23C14/325 - Electric arc evaporation
  • H01J37/32064 - Circuits specially adapted for controlling the arc discharge
  • H01J2237/3385 - Carburising

• US Classifications

  • 219 - Electric heating