1875649

Information

• Patent Grant
• 1875649

• References
• Source

• Patent Number

  1,875,649

• Date Filed

  Not available

• Date Issued

  Tuesday, September 6, 1932
  92 years ago

• CPC

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

• US Classifications

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