4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Optical or pre-photocell system

Giovanni Aiello

Inventor

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Device for determining the position of a moving part and drillin

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Drill string enabling information to be transmitted

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Reexamination Certificate

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Hollow drilling rod for transmitting information

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Reexamination Certificate

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Method of and device for obtaining the peak value of a signal an

Measuring and testing – Hardness – By penetrator or indentor
Patent

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Profile ID: LFUS-PAI-P-905707

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