1203621

Information

• Patent Grant
• 1203621

• References
• Source

• Patent Number

  1,203,621

• Date Filed

  Not available

• Date Issued

  Tuesday, November 7, 1916
  108 years ago

• CPC

  • G10C3/12 - Keyboards Keys
  • Y10S200/35 - Weight operated tread/treadless switch

• US Classifications

  • 084 - Music
  • 200 - Electricity: circuit makers and breakers