1491622

Information

• Patent Grant
• 1491622

• References
• Source

• Patent Number

  1,491,622

• Date Filed

  Not available

• Date Issued

  Tuesday, April 22, 1924
  100 years ago

• CPC

  • F24D19/086 - hand-operated
  • Y10T137/4336 - Cleaning member reciprocates in passage

• US Classifications

  • 137 - Fluid handling
  • 251 - Valves and valve actuation