297986

Information

• Patent Grant
• 297986

• References
• Source

• Patent Number

  297,986

• Date Filed

  Not available

• Date Issued

  Tuesday, May 6, 1884
  140 years ago

• CPC

  • F16K5/106 - with pilot flame
  • Y10T137/87032 - Rotary concentric valves

• US Classifications

  • 137 - Fluid handling