2989648

Information

• Patent Grant
• 2989648

• References
• Source

• Patent Number

  2,989,648

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1961
  63 years ago

• CPC

  • G05B1/025 - using inductance means

• US Classifications

  • 307 - Electrical transmission or interconnection systems