2963791

Information

• Patent Grant
• 2963791

• References
• Source

• Patent Number

  2,963,791

• Date Filed

  Not available

• Date Issued

  Tuesday, December 13, 1960
  64 years ago

• CPC

  • B23Q17/24 - using optics or electromagnetic waves
  • B23B23/045 - the centres being adjustable
  • B23Q17/22 - for indicating or measuring existing or desired position of tool or work
  • C07C311/54 - either X or Y, but not both, being nitrogen atoms
  • B23B2260/088 - Indication scales
  • Y10T82/2568 - Center
  • Y10T137/7777 - Both valves spring biased

• US Classifications

  • 033 - Geometrical instruments
  • 116 - Signals and indicators
  • 359 - Optical: systems and elements