918012

Information

• Patent Grant
• 918012

• References
• Source

• Patent Number

  918,012

• Date Filed

  Not available

• Date Issued

  Tuesday, April 13, 1909
  115 years ago

• CPC

  • F21H3/00 - Manufacturing incandescent mantles Treatment prior to use
  • Y10T29/53965 - for assembling a luminescent mantle

• US Classifications

  • 029 - Metal working
  • 431 - Combustion