3220175

Information

• Patent Grant
• 3220175

• References
• Source

• Patent Number

  3,220,175

• Date Filed

  Not available

• Date Issued

  Tuesday, November 30, 1965
  59 years ago

• CPC

  • G04B23/03 - Alarm signal stop arrangements
  • G04B23/10 - with pre-signal with repeated signal with changeable intensity of sound
  • G04C21/18 - by mechanically unlocking an electro-mechanical vibrator

• US Classifications

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