2989001

Information

• Patent Grant
• 2989001

• References
• Source

• Patent Number

  2,989,001

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1961
  63 years ago

• CPC

  • F04B53/126 - Ball valves
  • B66F3/24 - fluid-pressure operated
  • B66F3/42 - with self-contained pumps
  • E21D15/45 - having closed fluid system
  • F04B5/00 - Machines or pumps with differential surface pistons
  • F04B49/243 - by keeping open the inlet valve

• US Classifications

  • 417 - Pumps