Patent classifications
H
ELECTRICITY
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H10
SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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H10N
ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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30/00
Piezoelectric or electrostrictive devices
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H10N30/50
having a stacked or multilayer structure
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H10N30/506
having a cylindrical shape and having stacking in the radial direction, e.g. coaxial or spiral type rolls
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