1022987

Information

• Patent Grant
• 1022987

• References
• Source

• Patent Number

  1,022,987

• Date Filed

  Not available

• Date Issued

  Tuesday, April 9, 1912
  112 years ago

• CPC

  • G04C1/026 - having unipolar rotating armature

• US Classifications

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