1489912

Information

• Patent Grant
• 1489912

• References
• Source

• Patent Number

  1,489,912

• Date Filed

  Not available

• Date Issued

  Tuesday, April 8, 1924
  100 years ago

• CPC

  • F16K15/12 - Springs for ring valves
  • F04B37/16 - Means for nullifying unswept space
  • F04B39/0016 - with valve arranged in the piston
  • F04B39/1033 - annular disc valves
  • F17C9/00 - Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
  • Y10T137/7773 - Supporting valve only spring biased
  • Y10T137/7838 - Plural

• US Classifications

  • 417 - Pumps
  • 137 - Fluid handling