1768318

Information

• Patent Grant
• 1768318

• References
• Source

• Patent Number

  1,768,318

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1930
  94 years ago

• CPC

  • E21C1/10 - with a built-in feeding device
  • Y10T74/19735 - Nut disengageable from screw

• US Classifications

  • 074 - Machine element or mechanism
  • 173 - Tool driving or impacting