1420829

Information

• Patent Grant
• 1420829

• References
• Source

• Patent Number

  1,420,829

• Date Filed

  Not available

• Date Issued

  Tuesday, June 27, 1922
  101 years ago

• CPC

  • H01H9/185 - Fluorescent or phosphorescent symbols or distinguishing marks
  • Y10T70/8892 - Silencers or mufflers

• US Classifications

  • 250 - Radiant energy
  • 070 - Locks