Patent classifications
H
ELECTRICITY
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H03
ELECTRONIC CIRCUITRY
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H03H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
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9/00
Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
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H03H9/70
Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
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H03H9/72
Networks using surface acoustic waves
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