3589389

Information

• Patent Grant
• 3589389

• References
• Source

• Patent Number

  3,589,389

• Date Filed

  Not available

• Date Issued

  Tuesday, June 29, 1971
  54 years ago

• CPC

  • G05D7/0193 - using hydraulic or pneumatic amplifiers, relays or transmitters
  • A01G27/001 - with intermittent watering means
  • A01G31/02 - Special apparatus therefor
  • Y02P60/216 - Aquaponics or hydroponics
  • Y10T137/7339 - By weight of accumulated fluid
  • Y10T137/86187 - Plural tanks or compartments connected for serial flow

• US Classifications

  • 137 - Fluid handling