856556

Information

• Patent Grant
• 856556

• References
• Source

• Patent Number

  856,556

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1907
  117 years ago

• CPC

  • E05B35/12 - requiring the use of two keys
  • Y10T70/7458 - Interdependent
  • Y10T70/7475 - Submaster- and change-key
  • Y10T70/7667 - Operating elements, parts and adjuncts
  • Y10T70/7751 - With ball or roller

• US Classifications

  • 070 - Locks
  • 052 - Static structures