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Subject Hearing aids Remove constraint Subject: Hearing aids

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    • 1989-Oct-18

    Arnold O. Beckman at the White House with President George H. W. Bush, receiving the National Medal of Science "for his leadership in the development of analytical instrumentation, and for his deep and abiding concern…

    • 1950s

    Gold colored plastic box with a black circular grate and gold steel clips on the front; on the left top corner is a black plastic tone dial and on the right top corner is the volume dial; on the right side is a black…