1922976

Information

• Patent Grant
• 1922976

• References
• Source

• Patent Number

  1,922,976

• Date Filed

  Not available

• Date Issued

  Tuesday, August 15, 1933
  91 years ago

• CPC

  • G01C19/40 - for control by signals from a master compass
  • Y10S116/43 - Navigation devices

• US Classifications

  • 033 - Geometrical instruments
  • 116 - Signals and indicators
  • 235 - Registers