1629581

Information

• Patent Grant
• 1629581

• References
• Source

• Patent Number

  1,629,581

• Date Filed

  Not available

• Date Issued

  Tuesday, May 24, 1927
  97 years ago

• CPC

  • B23B51/0406 - Drills with a tubular body
  • B23D61/025 - Details of saw blade body
  • B28D1/041 - with cylinder saws
  • B23B2226/75 - Stone, rock or concrete
  • B23B2260/082 - Holes

• US Classifications

  • 175 - Boring or penetrating the earth
  • 173 - Tool driving or impacting