1271097

Information

• Patent Grant
• 1271097

• References
• Source

• Patent Number

  1,271,097

• Date Filed

  Not available

• Date Issued

  Tuesday, July 2, 1918
  106 years ago

• CPC

  • G08B7/02 - using mechanical transmission

• US Classifications

  • 340 - Communications: electrical
  • 116 - Signals and indicators