2133980

Information

• Patent Grant
• 2133980

• References
• Source

• Patent Number

  2,133,980

• Date Filed

  Not available

• Date Issued

  Tuesday, October 25, 1938
  86 years ago

• CPC

  • H02M1/24 - incorporating rolling or tumbling contacts

• US Classifications

  • 363 - Electric power conversion systems
  • 200 - Electricity: circuit makers and breakers