258626

Information

• Patent Grant
• 258626

• References
• Source

• Patent Number

  258,626

• Date Filed

  Not available

• Date Issued

  Tuesday, May 30, 1882
  142 years ago

• CPC

  • G10K1/076 - for timed or repeated operation

• US Classifications

  • 340 - Communications: electrical
  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets
  • 379 - Telephonic communications