2400840

Information

• Patent Grant
• 2400840

• References
• Source

• Patent Number

  2,400,840

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1946
  78 years ago

• CPC

  • G01B3/18 - Micrometers
  • Y10T82/142 - with workpiece gauge
  • Y10T82/2572 - Attachment

• US Classifications

  • 033 - Geometrical instruments
  • 082 - Turning
  • 353 - Optics: image projectors