1688819

Information

• Patent Grant
• 1688819

• References
• Source

• Patent Number

  1,688,819

• Date Filed

  Not available

• Date Issued

  Tuesday, October 23, 1928
  96 years ago

• CPC

  • B23B49/04 - Devices for boring or drilling centre holes in workpieces
  • Y10S81/03 - Wrenches, thread-adjustment lock
  • Y10T408/892 - with work-engaging structure detachable from cutting edge

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool
  • 081 - Tools