202250

Information

• Patent Grant
• 202250

• References
• Source

• Patent Number

  202,250

• Date Filed

  Not available

• Date Issued

  Tuesday, April 9, 1878
  146 years ago

• CPC

  • E03C1/295 - using air-supply valves
  • E03C1/1225 - of air admittance valves
  • Y10T137/3258 - Automatic valve in vent line
  • Y10T137/4553 - Submerged inlet pipe end
  • Y10T137/7504 - Removable valve head and seat unit
  • Y10T137/7909 - Valve body is the weight
  • Y10T137/7919 - Guide and seat integral unit

• US Classifications

  • 137 - Fluid handling