2455219

Information

• Patent Grant
• 2455219

• References
• Source

• Patent Number

  2,455,219

• Date Filed

  Not available

• Date Issued

  Tuesday, November 30, 1948
  76 years ago

• CPC

  • G01C19/40 - for control by signals from a master compass
  • G01C17/00 - Compasses Devices for ascertaining true or magnetic north for navigation or surveying purposes

• US Classifications

  • 346 - Recorders
  • 033 - Geometrical instruments
  • 235 - Registers