347528

Information

• Patent Grant
• 347528

• References
• Source

• Patent Number

  347,528

• Date Filed

  Not available

• Date Issued

  Tuesday, August 17, 1886
  138 years ago

• CPC

  • G04B19/305 - the hands carrying the light source

• US Classifications

  • 368 - Horology: time measuring systems or devices