2181444

Information

• Patent Grant
• 2181444

• References
• Source

• Patent Number

  2,181,444

• Date Filed

  Not available

• Date Issued

  Tuesday, November 28, 1939
  85 years ago

• CPC

  • G01C9/16 - by using more than one pendulum

• US Classifications

  • 033 - Geometrical instruments