1660199

Information

• Patent Grant
• 1660199

• References
• Source

• Patent Number

  1,660,199

• Date Filed

  Not available

• Date Issued

  Tuesday, February 21, 1928
  97 years ago

• CPC

  • E05B35/12 - requiring the use of two keys
  • Y10T70/35 - Keeper-encasing
  • Y10T70/7774 - False or picking key trapping
  • Y10T70/7977 - Key-controlled

• US Classifications

  • 070 - Locks