2938221

Information

• Patent Grant
• 2938221

• References
• Source

• Patent Number

  2,938,221

• Date Filed

  Not available

• Date Issued

  Tuesday, May 31, 1960
  64 years ago

• CPC

  • B23G5/12 - self-releasing
  • Y10T74/1424 - Sequential
  • Y10T408/85915 - with means to rotate scroll

• US Classifications

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