1331504

Information

• Patent Grant
• 1331504

• References
• Source

• Patent Number

  1,331,504

• Date Filed

  Not available

• Date Issued

  Tuesday, February 24, 1920
  105 years ago

• CPC

  • F04B1/02 - having two cylinders
  • F04B53/1015 - Combinations of ball valves working in parallel
  • F04B53/103 - Flat-annular type disc valves
  • F04B53/144 - Adaptation of piston-rods

• US Classifications

  • 417 - Pumps