3906618

Information

• Patent Grant
• 3906618

• References
• Source

• Patent Number

  3,906,618

• Date Filed

  Not available

• Date Issued

  Tuesday, September 23, 1975
  49 years ago

• CPC

  • B21B13/20 - for planetary rolling
  • B23K20/04 - by means of a rolling mill
  • B23K20/14 - Preventing or minimising gas access, or using protective gases or vacuum during welding

• US Classifications

  • 228 - Metal fusion bonding
  • 219 - Electric heating