2974731

Information

• Patent Grant
• 2974731

• References
• Source

• Patent Number

  2,974,731

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1961
  63 years ago

• CPC

  • F04D29/364 - The blades having only a predetermined number of possible positions

• US Classifications

  • 416 - Fluid reaction surfaces
  • D23 - Environmental heating and cooling