1623927

Information

• Patent Grant
• 1623927

• References
• Source

• Patent Number

  1,623,927

• Date Filed

  Not available

• Date Issued

  Tuesday, April 5, 1927
  97 years ago

• CPC

  • B23B51/0406 - Drills with a tubular body
  • B23B2270/22 - Externally located features, machining or gripping of external surfaces
  • Y10T408/893 - Hollow milling Tool

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool
  • 200 - Electricity: circuit makers and breakers