2253491

Information

• Patent Grant
• 2253491

• References
• Source

• Patent Number

  2,253,491

• Date Filed

  Not available

• Date Issued

  Tuesday, August 26, 1941
  83 years ago

• CPC

  • B23G1/261 - Die and tap wrenches
  • Y10T408/72 - Friction clutch

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool
  • 470 - Threaded, headed fastener, or washer making: process and apparatus