3747328

Information

• Patent Grant
• 3747328

• References
• Source

• Patent Number

  3,747,328

• Date Filed

  Not available

• Date Issued

  Tuesday, July 24, 1973
  51 years ago

• CPC

  • G04F3/022 - using mechanical signalling device

• US Classifications

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