3704581

Information

• Patent Grant
• 3704581

• References
• Source

• Patent Number

  3,704,581

• Date Filed

  Not available

• Date Issued

  Tuesday, December 5, 1972
  52 years ago

• CPC

  • G04F3/027 - using electrical contacts

• US Classifications

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