321829

Information

• Patent Grant
• 321829

• References
• Source

• Patent Number

  321,829

• Date Filed

  Not available

• Date Issued

  Tuesday, July 7, 1885
  139 years ago

• CPC

  • E03C1/295 - using air-supply valves
  • Y10T137/3258 - Automatic valve in vent line
  • Y10T137/698 - Wall
  • Y10T137/7837 - Direct response valves [i.e., check valve type]
  • Y10T137/791 - Ball valves
  • Y10T137/8359 - Inspection means

• US Classifications

  • 137 - Fluid handling
  • 251 - Valves and valve actuation