4. Electrical generator or motor structure
  5. Non-dynamoelectric
  6. Piezoelectric elements and devices

Oleg Abramov

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Acoustic well recovery method and device

Wells – Processes – Vibrating the earth or material in or being placed in the...
Reexamination Certificate

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Device for transmitting ultrasonic energy to a liquid or...

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

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Electroacoustic method and device for stimulation of mass...

Wells – Processes – Vibrating the earth or material in or being placed in the...
Reexamination Certificate

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Method for intensification of high-viscosity oil production...

Wells – Processes – Heating – cooling or insulating
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2479919

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