2194920

Information

• Patent Grant
• 2194920

• References
• Source

• Patent Number

  2,194,920

• Date Filed

  Not available

• Date Issued

  Tuesday, March 26, 1940
  84 years ago

• CPC

  • B23K5/003 - the welding zone being shielded against the influence of the surrounding atmosphere
  • F23D14/465 - for torches

• US Classifications

  • 228 - Metal fusion bonding
  • 148 - Metal treatment
  • 219 - Electric heating