3520161

Information

• Patent Grant
• 3520161

• References
• Source

• Patent Number

  3,520,161

• Date Filed

  Not available

• Date Issued

  Tuesday, July 14, 1970
  54 years ago

• CPC

  • E05B45/0605 - for preventing of leaving the key
  • Y10T70/7667 - Operating elements, parts and adjuncts
  • Y10T70/7757 - Push or pull key operation
  • Y10T70/827 - Attention-directing

• US Classifications

  • 070 - Locks
  • 200 - Electricity: circuit makers and breakers
  • 340 - Communications: electrical