3749028

Information

• Patent Grant
• 3749028

• References
• Source

• Patent Number

  3,749,028

• Date Filed

  Not available

• Date Issued

  Tuesday, July 31, 1973
  51 years ago

• CPC

  • E05G7/002 - Security barriers for bank teller windows
  • E06B7/30 - Peep-holes Devices for speaking through Doors having windows

• US Classifications

  • 109 - Safes, bank protection, or a related device
  • 089 - Ordnance