475809

Information

• Patent Grant
• 475809

• References
• Source

• Patent Number

  475,809

• Date Filed

  Not available

• Date Issued

  Tuesday, May 31, 1892
  132 years ago

• CPC

  • G04C1/026 - having unipolar rotating armature

• US Classifications

  • 368 - Horology: time measuring systems or devices