3851148

Information

• Patent Grant
• 3851148

• References
• Source

• Patent Number

  3,851,148

• Date Filed

  Not available

• Date Issued

  Tuesday, November 26, 1974
  50 years ago

• CPC

  • B23K11/248 - Electric supplies using discharge tubes
  • B23K9/235 - Preliminary treatment
  • C21D9/50 - for welded joints
  • G05D23/1904 - variable in time
  • G05D23/224 - using selfs or transformers

• US Classifications

  • 219 - Electric heating