458221

Information

• Patent Grant
• 458221

• References
• Source

• Patent Number

  458,221

• Date Filed

  Not available

• Date Issued

  Tuesday, August 25, 1891
  133 years ago

• CPC

  • H01R39/386 - Electrically insulated bolts

• US Classifications

  • 174 - Electricity: conductors and insulators