2329981

Information

• Patent Grant
• 2329981

• References
• Source

• Patent Number

  2,329,981

• Date Filed

  Not available

• Date Issued

  Tuesday, September 21, 1943
  81 years ago

• CPC

  • E21B21/106 - Valve arrangements outside the borehole
  • F16K5/185 - by means of conical surfaces

• US Classifications

  • 251 - Valves and valve actuation