1540855

Information

• Patent Grant
• 1540855

• References
• Source

• Patent Number

  1,540,855

• Date Filed

  Not available

• Date Issued

  Tuesday, June 9, 1925
  99 years ago

• CPC

  • G04C13/12 - by continuously-rotating electric motors

• US Classifications

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