621361

Information

• Patent Grant
• 621361

• References
• Source

• Patent Number

  621,361

• Date Filed

  Not available

• Date Issued

  Tuesday, March 21, 1899
  125 years ago

• CPC

  • E05B45/086 - by transverse movement
  • G08B13/04 - by breaking of glass

• US Classifications

  • 340 - Communications: electrical