2393901

Information

• Patent Grant
• 2393901

• References
• Source

• Patent Number

  2,393,901

• Date Filed

  Not available

• Date Issued

  Tuesday, January 29, 1946
  78 years ago

• CPC

  • G08B5/28 - with hinged flap or arm

• US Classifications

  • 379 - Telephonic communications
  • 200 - Electricity: circuit makers and breakers
  • 340 - Communications: electrical