461423

Information

• Patent Grant
• 461423

• References
• Source

• Patent Number

  461,423

• Date Filed

  Not available

• Date Issued

  Tuesday, October 20, 1891
  133 years ago

• CPC

  • G04C1/026 - having unipolar rotating armature

• US Classifications

  • 368 - Horology: time measuring systems or devices