3674978

Information

• Patent Grant
• 3674978

• References
• Source

• Patent Number

  3,674,978

• Date Filed

  Not available

• Date Issued

  Tuesday, July 4, 1972
  52 years ago

• CPC

  • H05H1/32 - using an arc
  • B05B7/226 - the material being originally a particulate material
  • H05H1/34 - Details
  • H05H1/38 - Guiding or centering of electrodes
  • H05H2001/3415 - indexing scheme associated with H05H1/34

• US Classifications

  • 219 - Electric heating
  • 313 - Electric lamp and discharge devices