1974648

Information

• Patent Grant
• 1974648

• References
• Source

• Patent Number

  1,974,648

• Date Filed

  Not available

• Date Issued

  Tuesday, September 25, 1934
  90 years ago

• CPC

  • B60Q1/34 - for indicating change of drive direction
  • Y10S200/35 - Weight operated tread/treadless switch

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 200 - Electricity: circuit makers and breakers
  • 362 - Illumination