1380752

Information

• Patent Grant
• 1380752

• References
• Source

• Patent Number

  1,380,752

• Date Filed

  Not available

• Date Issued

  Tuesday, June 7, 1921
  103 years ago

• CPC

  • H01H1/065 - formed by freely suspended particles

• US Classifications

  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets