2569890

Information

• Patent Grant
• 2569890

• References
• Source

• Patent Number

  2,569,890

• Date Filed

  Not available

• Date Issued

  Tuesday, October 2, 1951
  73 years ago

• CPC

  • E06C5/34 - Indicating devices

• US Classifications

  • 116 - Signals and indicators
  • 033 - Geometrical instruments