1437778

Information

• Patent Grant
• 1437778

• References
• Source

• Patent Number

  1,437,778

• Date Filed

  Not available

• Date Issued

  Tuesday, December 5, 1922
  102 years ago

• CPC

  • H01H21/56 - making contact in one position only

• US Classifications

  • 324 - Electricity: measuring and testing