2173503

Information

• Patent Grant
• 2173503

• References
• Source

• Patent Number

  2,173,503

• Date Filed

  Not available

• Date Issued

  Tuesday, September 19, 1939
  85 years ago

• CPC

  • H03J1/042 - Means insuring a precise reading of the dial

• US Classifications

  • 116 - Signals and indicators