1665804

Information

• Patent Grant
• 1665804

• References
• Source

• Patent Number

  1,665,804

• Date Filed

  Not available

• Date Issued

  Tuesday, April 10, 1928
  96 years ago

• CPC

  • G04C17/0016 - with date indication

• US Classifications

  • 318 - Electricity: motive power systems
  • 242 - Winding, tensioning, or guiding
  • 368 - Horology: time measuring systems or devices
  • 968 - Horology