2792274

Information

• Patent Grant
• 2792274

• References
• Source

• Patent Number

  2,792,274

• Date Filed

  Not available

• Date Issued

  Tuesday, May 14, 1957
  67 years ago

• CPC

  • G01C17/20 - Observing the compass card or needle

• US Classifications

  • 346 - Recorders
  • 033 - Geometrical instruments