3697982

Information

• Patent Grant
• 3697982

• References
• Source

• Patent Number

  3,697,982

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1972
  52 years ago

• CPC

  • G04C21/36 - Signal repeating devices

• US Classifications

  • 340 - Communications: electrical
  • 968 - Horology