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Subject Trademarks Remove constraint Subject: Trademarks

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    • 1947-Aug-15

    This letter includes a report on existing Beckman trademarks as of 1947, including information on the "acidimeter" and the point at which that instrument became known as the pH meter (1935).

    • 1949

    Advertisement detailing the decision by the Hercules Powder Company to relinquish the trademark name Toxaphene in response to the need for a simple and generally acceptable name for the insecticidal chemical known as…