2150189

Information

• Patent Grant
• 2150189

• References
• Source

• Patent Number

  2,150,189

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1939
  85 years ago

• CPC

  • B25D17/088 - with radial movable locking elements co-operating with bit shafts specially adapted therefor
  • B23B2251/247 - Drilling tools having a working portion at both ends of the shank
  • B25D2217/0034 - Details of shank profiles
  • Y10T279/17821 - Set screw

• US Classifications

  • 175 - Boring or penetrating the earth
  • 279 - Chucks or sockets