Section of model "F" controlled-key Comptometer by Felt and Tarrant Manufacturing Co.

Made:: 1921 in Chicago

manufacturer:: Felt and Tarrant Manufacturing Company

Section of model F' controlled-key Comptometer by Felt and

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Section of model F' controlled-key Comptometer by Felt and
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Section of model "F" controlled-key Comptometer by Felt and Tarrant Manufacturing Co., Chicago, USA.

Details

Category:: Mathematics

Object Number:: 1921-16

type:: model (calculating machine)

credit:: Felt & Tarrant Manufacturing Co.

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Section of model "F" controlled-key Comptometer by Felt and Tarrant Manufacturing Co.

Details

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