2981337

Information

• Patent Grant
• 2981337

• References
• Source

• Patent Number

  2,981,337

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1961
  63 years ago

• CPC

  • B64C11/24 - Hollow blades
  • Y10T29/49334 - Utilizing hollow tube blank

• US Classifications

  • 416 - Fluid reaction surfaces
  • 029 - Metal working