1775689

Information

• Patent Grant
• 1775689

• References
• Source

• Patent Number

  1,775,689

• Date Filed

  Not available

• Date Issued

  Tuesday, September 16, 1930
  94 years ago

• CPC

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

• US Classifications

  • 362 - Illumination