Biersach & Niedermeyer Co.

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Biersach & Niedermeyer Co.
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Defunct 1967
Succeeded by Alerting Communicators of America

Biersach & Niedermeyer Co. or B&N for short was a metal manufacturing business based out of Chicago, IL in 1873. The only siren that was manufactured by the company was the Mobil Directo The company was redounded as Alerting Communicators of America in 1967. Biersach & Niedermeyer Co. failed business due to low sales of the Mobil Directo.

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