3922843

Information

• Patent Grant
• 3922843

• References
• Source

• Patent Number

  3,922,843

• Date Filed

  Not available

• Date Issued

  Tuesday, December 2, 1975
  49 years ago

• CPC

  • G04B19/21 - Drums
  • G04B23/021 - Controls (winding up the alarm; adjusting and indicating the waking time)

• US Classifications

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