3818928

Information

• Patent Grant
• 3818928

• References
• Source

• Patent Number

  3,818,928

• Date Filed

  Not available

• Date Issued

  Tuesday, June 25, 1974
  50 years ago

• CPC

  • A01G25/16 - Control of watering
  • Y10T137/3137 - Gas injected by liquid pressure or flow
  • Y10T137/7766 - Choked passage through main valve head
  • Y10T137/777 - Spring biased

• US Classifications

  • 137 - Fluid handling
  • 138 - Pipes and tubular conduits
  • 239 - Fluid sprinkling, spraying, and diffusing
  • 251 - Valves and valve actuation