3620291

Information

• Patent Grant
• 3620291

• References
• Source

• Patent Number

  3,620,291

• Date Filed

  Not available

• Date Issued

  Tuesday, November 16, 1971
  53 years ago

• CPC

  • B23K23/00 - Alumino-thermic welding
  • B23K2201/26 - Railway or like rails
  • Y10S164/12 - Thermit

• US Classifications

  • 164 - Metal founding
  • 228 - Metal fusion bonding