3555809

Information

• Patent Grant
• 3555809

• References
• Source

• Patent Number

  3,555,809

• Date Filed

  Not available

• Date Issued

  Tuesday, January 19, 1971
  54 years ago

• CPC

  • G04F3/022 - using mechanical signalling device

• US Classifications

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