1556553

Information

• Patent Grant
• 1556553

• References
• Source

• Patent Number

  1,556,553

• Date Filed

  Not available

• Date Issued

  Tuesday, October 6, 1925
  99 years ago

• CPC

  • G04B17/225 - with pendulums

• US Classifications

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