3463396

Information

• Patent Grant
• 3463396

• References
• Source

• Patent Number

  3,463,396

• Date Filed

  Not available

• Date Issued

  Tuesday, August 26, 1969
  55 years ago

• CPC

  • A01G25/16 - Control of watering
  • G01K7/01 - using semiconducting elements having PN junctions
  • G05D22/02 - characterised by the use of electric means
  • G05D23/2034 - the sensing element being a semiconductor
  • Y10T137/1866 - For controlling soil irrigation
  • Y10T137/1963 - Temperature

• US Classifications

  • 239 - Fluid sprinkling, spraying, and diffusing
  • 137 - Fluid handling
  • 374 - Thermal measuring and testing