1977556

Information

• Patent Grant
• 1977556

• References
• Source

• Patent Number

  1,977,556

• Date Filed

  Not available

• Date Issued

  Tuesday, October 16, 1934
  90 years ago

• CPC

  • B21H3/06 - Making by means of profiled members other than rolls
  • Y10T409/4056 - to infeed work past cutter

• US Classifications

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