1621317

Information

• Patent Grant
• 1621317

• References
• Source

• Patent Number

  1,621,317

• Date Filed

  Not available

• Date Issued

  Tuesday, March 15, 1927
  97 years ago

• CPC

  • B44B3/006 - carving or engraving devices having several cutting tools
  • B44B3/001 - by copying
  • B44B2700/021 - by copying
  • Y10T409/301568 - by use of pivotally supported tracer

• US Classifications

  • 409 - Gear cutting, milling, or planing