2311804

Information

• Patent Grant
• 2311804

• References
• Source

• Patent Number

  2,311,804

• Date Filed

  Not available

• Date Issued

  Tuesday, February 23, 1943
  81 years ago

• CPC

  • G01B7/293 - for measuring radius of curvature

• US Classifications

  • 033 - Geometrical instruments