3457720

Information

• Patent Grant
• 3457720

• References
• Source

• Patent Number

  3,457,720

• Date Filed

  Not available

• Date Issued

  Tuesday, July 29, 1969
  55 years ago

• CPC

  • G04F7/06 - running only during the time interval to be measured
  • G04F7/08 - Watches or clocks with stop devices
  • G04F7/0804 - with reset mechanisms
  • G04F7/0842 - with start-stop control mechanisms

• US Classifications

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