1420133

Information

• Patent Grant
• 1420133

• References
• Source

• Patent Number

  1,420,133

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1922
  102 years ago

• CPC

  • F21L23/00 - Non-electric hand-lamps for miners
  • C10H1/10 - Water feed from above through a central or lateral pipe

• US Classifications

  • 362 - Illumination