1661938

Information

• Patent Grant
• 1661938

• References
• Source

• Patent Number

  1,661,938

• Date Filed

  Not available

• Date Issued

  Tuesday, March 6, 1928
  97 years ago

• CPC

  • B25B27/023 - using screws
  • B25B27/04 - inserting or withdrawing keys
  • Y10T29/53822 - Machine key and another member
  • Y10T29/53865 - with arm connecting engaging means

• US Classifications

  • 029 - Metal working