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Dual-mode surface wave filter with enhanced symmetry and...

Wave transmission lines and networks – Coupling networks – Electromechanical filter
Reexamination Certificate

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Dual-tuning microwave devices using ferroelectric/ferrite...

Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Reexamination Certificate

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Duall-passband surface acoustic wave filter

Wave transmission lines and networks – Coupling networks – Electromechanical filter
Patent

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Duplex dielectric filter

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent

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Duplex filter operating as a change-over switch

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent

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Duplex filtering

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate

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Duplex/diplexer having two modularly constructed filters

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate

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Duplexed front-end for a radio transceiver system

Wave transmission lines and networks – Automatically controlled systems – With control of equalizer and/or delay network
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Duplexer

Wave transmission lines and networks – Plural channel systems – Having branched circuits
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Duplexer

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate

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Duplexer and communication apparatus including the same

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate

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Duplexer and communication apparatus using the same

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate

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Duplexer and communication apparatus with a matching circuit...

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate

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Duplexer and communication apparatus with first and second...

Wave transmission lines and networks – Plural channel systems – Having branched circuits
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Duplexer and communications equipment

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate

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Duplexer and composite module having a package with an...

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate

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Duplexer and elastic wave device

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate

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Duplexer and ladder type filter

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate

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Duplexer and method of isolating an Rx-band and a Tx-band

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate

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Duplexer and method of manufacturing same

Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate

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