3688142

Information

• Patent Grant
• 3688142

• References
• Source

• Patent Number

  3,688,142

• Date Filed

  Not available

• Date Issued

  Tuesday, August 29, 1972
  51 years ago

• CPC

  • H01R39/085 - the slip-rings being made of carbon

• US Classifications

  • 310 - Electrical generator or motor structure