1724432

Information

• Patent Grant
• 1724432

• References
• Source

• Patent Number

  1,724,432

• Date Filed

  Not available

• Date Issued

  Tuesday, August 13, 1929
  95 years ago

• CPC

  • G01C19/40 - for control by signals from a master compass
  • Y10S116/23 - Movable index

• US Classifications

  • 033 - Geometrical instruments
  • 116 - Signals and indicators
  • 340 - Communications: electrical
  • 362 - Illumination