3811458

Information

• Patent Grant
• 3811458

• References
• Source

• Patent Number

  3,811,458

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1974
  50 years ago

• CPC

  • F15C3/02 - using spool valves
  • Y10T137/2554 - Reversing or 4-way valve systems
  • Y10T137/2698 - Electrical control

• US Classifications

  • 137 - Fluid handling
  • 091 - Motors: expansible chamber type