418401

Information

• Patent Grant
• 418401

• References
• Source

• Patent Number

  418,401

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1889
  135 years ago

• CPC

  • G04B3/001 - by push button

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 968 - Horology