1857576

Information

• Patent Grant
• 1857576

• References
• Source

• Patent Number

  1,857,576

• Date Filed

  Not available

• Date Issued

  Tuesday, May 10, 1932
  92 years ago

• CPC

  • G05F1/26 - combined with discharge tubes or semiconductor devices

• US Classifications

  • 323 - Electricity: power supply or regulation systems
  • 307 - Electrical transmission or interconnection systems