1846438

Information

• Patent Grant
• 1846438

• References
• Source

• Patent Number

  1,846,438

• Date Filed

  Not available

• Date Issued

  Tuesday, February 23, 1932
  93 years ago

• CPC

  • B23K9/0354 - the backing means being expandable

• US Classifications

  • 219 - Electric heating
  • 244 - Aeronautics and astronautics