1681139

Information

• Patent Grant
• 1681139

• References
• Source

• Patent Number

  1,681,139

• Date Filed

  Not available

• Date Issued

  Tuesday, August 14, 1928
  96 years ago

• CPC

  • B61L9/02 - non-electric

• US Classifications

  • 431 - Combustion
  • D26 - Lighting