408348

Information

• Patent Grant
• 408348

• References
• Source

• Patent Number

  408,348

• Date Filed

  Not available

• Date Issued

  Tuesday, August 6, 1889
  135 years ago

• CPC

  • B21G3/18 - by operations not restricted to one of the groups B21G3/12 - B21G3/16
  • Y10T409/20 - with furbishing of cutter
  • Y10T409/50246 - Means for trimming edge [e.g., chamfering, scarfing, etc.]

• US Classifications

  • 470 - Threaded, headed fastener, or washer making: process and apparatus
  • 409 - Gear cutting, milling, or planing