409220

Information

• Patent Grant
• 409220

• References
• Source

• Patent Number

  409,220

• Date Filed

  Not available

• Date Issued

  Tuesday, August 20, 1889
  135 years ago

• CPC

  • E05B43/00 - Time locks
  • Y10S70/45 - Time lock and auxiliary lock operable on failure of time lock
  • Y10T70/704 - Continuously operating once initiated

• US Classifications

  • 070 - Locks