H04S 2400/13

Aspects of volume control, not necessarily automatic, in stereophonic sound systems

H04S2400/13 (Aspects of volume control, not necessarily automatic, in stereophonic sound systems) appears on 1,209 US grants and 1,590 published applications in this corpus.

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1,209
Published applications
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401
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6 Oct 2026

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199010
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199810
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200111
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200767
2008415
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20131533
20141625
20153229
20163984
20177289
20189598
2019102111
2020132128
2021109136
2022120144
202395154
2024134151
2025119161
202682128

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