1921090

Information

• Patent Grant
• 1921090

• References
• Source

• Patent Number

  1,921,090

• Date Filed

  Not available

• Date Issued

  Tuesday, August 8, 1933
  91 years ago

• CPC

  • G10K1/348 - electrically operated

• US Classifications

  • 340 - Communications: electrical
  • 318 - Electricity: motive power systems