1673397

Information

• Patent Grant
• 1673397

• References
• Source

• Patent Number

  1,673,397

• Date Filed

  Not available

• Date Issued

  Tuesday, June 12, 1928
  96 years ago

• CPC

  • B25B27/04 - inserting or withdrawing keys
  • Y10T29/53822 - Machine key and another member
  • Y10T29/53874 - Pivotal grippers on screw

• US Classifications

  • 029 - Metal working