3609956

Information

• Patent Grant
• 3609956

• References
• Source

• Patent Number

  3,609,956

• Date Filed

  Not available

• Date Issued

  Tuesday, October 5, 1971
  53 years ago

• CPC

  • G04C17/0075 - by drums or drum-like devices
  • G04C21/18 - by mechanically unlocking an electro-mechanical vibrator
  • G04C23/16 - acting only at one preselected time or during one adjustable time interval
  • G04F3/08 - Additional arrangements in connection with ordinary electric clocks for this purpose

• US Classifications

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