1001830

Information

• Patent Grant
• 1001830

• References
• Source

• Patent Number

  1,001,830

• Date Filed

  Not available

• Date Issued

  Tuesday, August 29, 1911
  113 years ago

• CPC

  • G11B31/00 - Arrangements for the associated working of recording or reproducing apparatus with related apparatus
  • G09F25/00 - Audible advertising
  • Y10S200/34 - Recording and reproducing

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • 116 - Signals and indicators
  • 200 - Electricity: circuit makers and breakers
  • 340 - Communications: electrical