3812318

Information

• Patent Grant
• 3812318

• References
• Source

• Patent Number

  3,812,318

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1974
  50 years ago

• CPC

  • C21D1/34 - Methods of heating
  • B23K1/005 - Soldering by means of radiant energy
  • H05B3/0061 - for metal treatment

• US Classifications

  • 219 - Electric heating
  • 392 - Electric resistance heating devices