2117508

Information

• Patent Grant
• 2117508

• References
• Source

• Patent Number

  2,117,508

• Date Filed

  Not available

• Date Issued

  Tuesday, May 17, 1938
  87 years ago

• CPC

  • G04C13/04 - Master-clocks

• US Classifications

  • 200 - Electricity: circuit makers and breakers