692509

Information

• Patent Grant
• 692509

• References
• Source

• Patent Number

  692,509

• Date Filed

  Not available

• Date Issued

  Tuesday, February 4, 1902
  123 years ago

• CPC

  • G04C13/049 - by using current generating driving device

• US Classifications

  • 368 - Horology: time measuring systems or devices