3917996

Information

• Patent Grant
• 3917996

• References
• Source

• Patent Number

  3,917,996

• Date Filed

  Not available

• Date Issued

  Tuesday, November 4, 1975
  49 years ago

• CPC

  • G01W1/16 - Measuring atmospheric potential differences
  • G01R29/12 - Measuring electrostatic fields or voltage-potential
  • B64D2700/6221 - using electrical means

• US Classifications

  • 324 - Electricity: measuring and testing