by interferometric methods (using interferometers for measuring optically the linear dimensions of objects G01B9/02)

Child Classifications

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• G01J 2009/0203 2nd only CPC only CPC only
• G01J 2009/0207 2nd only CPC only CPC only
• G01J 2009/0211 2nd only CPC only CPC only
• G01J 2009/0223 2nd only CPC only CPC only
• G01J 2009/0226 2nd only +1 CPC CPC only CPC only
• G01J 2009/0234 2nd only +1 CPC CPC only CPC only
• G01J 2009/0242 2nd only CPC only CPC only
• G01J 2009/0249 2nd only +1 CPC CPC only CPC only
• G01J 2009/0257 2nd only CPC only CPC only
• G01J 2009/0261 2nd only +1 CPC CPC only CPC only
• G01J 2009/0269 2nd only CPC only CPC only
• G01J 2009/0273 2nd only CPC only CPC only
• G01J 2009/0276 2nd only CPC only CPC only
• G01J 2009/028 2nd only +4 CPC CPC only CPC only
• G01J 9/0215 +1 CPC CPC only CPC only
• G01J 9/0246 CPC only CPC only