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实用新型专利证书（波导号角及音箱）
实用新型专利证书（波导号角及音箱）
实用新型专利证书（路径对称等距离结构平面波导管）
实用新型专利证书（平面波导号角）
实用新型专利证书（双通道弧形扩散号角）
实用新型专利证书（同轴式音箱）
实用新型专利证书（一种非对称号角及喇叭）
实用新型专利证书（三分频线阵列音柱式音箱 ）
实用新型专利证书（中高频一体式号角）
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