407977

Information

• Patent Grant
• 407977

• References
• Source

• Patent Number

  407,977

• Date Filed

  Not available

• Date Issued

  Tuesday, July 30, 1889
  136 years ago

• CPC

  • G04B19/24313 - Independent date indicating devices activated by hand or by clockwork

• US Classifications

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