1363220

Information

• Patent Grant
• 1363220

• References
• Source

• Patent Number

  1,363,220

• Date Filed

  Not available

• Date Issued

  Tuesday, December 28, 1920
  105 years ago

• CPC

  • G08B5/32 - with indicator element moving rectilinearly

• US Classifications

  • 340 - Communications: electrical