1748581

Information

• Patent Grant
• 1748581

• References
• Source

• Patent Number

  1,748,581

• Date Filed

  Not available

• Date Issued

  Tuesday, February 25, 1930
  94 years ago

• CPC

  • B63H1/26 - Blades
  • B63H2001/145 - comprising blades of two or more different types

• US Classifications

  • 416 - Fluid reaction surfaces