4. Optics: measuring and testing
  5. By polarized light examination
  6. With light attenuation

John D. Bullock

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Method and apparatus for measuring the shape of a surface of an

Optics: measuring and testing – By polarized light examination – With light attenuation
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Square and rectangular electroacoustic bender bar transducer

Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
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