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19277221 · COUNTER-ROTATING BLADE-TYPE UNDERWATER LOW-FREQUENCY SOUND-EMITTING DEVICE

Filed 2025-07-22 · Pending The official file ↗ · Art unit 3645 · Examiner Abdallah Abulaban Hard · CPC H04B 11/00 · HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY · Tony Hom (Whiskey)

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