Automatic drill

• US 2,842,131 A
• Filed: 05/27/1957
• Issued: 07/08/1958
• Est. Priority Date: 05/27/1957
• Status: Expired due to Term

• Current Assignee: Smith, George W.
• Original Assignee: Smith, George W.
• Inventors: Smith, George W.
• Application Number:
  US03/661,922
• Time in Patent Office: 407 Days
• US Class Current: 606/173
• CPC Class Codes: A61B 17/1695 Trepans or craniotomes, i.e. specially adapted for drilling thin bones such as the skull
• CPC Class Codes: Y10T 408/70 Tool or tool-support with torque-applying clutch
• CPC Class Codes: Y10T 408/906 Axially spaced

Claims