435679

Information

• Patent Grant
• 435679

• References
• Source

• Patent Number

  435,679

• Date Filed

  Not available

• Date Issued

  Tuesday, September 2, 1890
  135 years ago

• CPC

  • G10C3/20 - involving the use of hydraulic, pneumatic, or electromagnetic means
  • G10H3/02 - using mechanical interrupters

• US Classifications

  • 084 - Music
  • 178 - Telegraphy
  • 246 - Railway switches and signals