1925620

Information

• Patent Grant
• 1925620

• References
• Source

• Patent Number

  1,925,620

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1933
  91 years ago

• CPC

  • F21L23/00 - Non-electric hand-lamps for miners

• US Classifications

  • 048 - Gas: heating and illuminating
  • 362 - Illumination