2452034

Information

• Patent Grant
• 2452034

• References
• Source

• Patent Number

  2,452,034

• Date Filed

  Not available

• Date Issued

  Tuesday, October 26, 1948
  76 years ago

• CPC

  • G08B5/28 - with hinged flap or arm

• US Classifications

  • 340 - Communications: electrical
  • 361 - Electricity: electrical systems and devices