2709331

Information

• Patent Grant
• 2709331

• References
• Source

• Patent Number

  2,709,331

• Date Filed

  Not available

• Date Issued

  Tuesday, May 31, 1955
  69 years ago

• CPC

  • G04C21/36 - Signal repeating devices

• US Classifications

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