1104939

Information

• Patent Grant
• 1104939

• References
• Source

• Patent Number

  1,104,939

• Date Filed

  Not available

• Date Issued

  Tuesday, July 28, 1914
  111 years ago

• CPC

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

• US Classifications

  • 084 - Music
  • 340 - Communications: electrical