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DE569382C
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Device on sprocket wheel calculating machines to transfer the values displayed in the counter into the setting mechanism
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DE525344C
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Switching device for electric drives of calculating machines
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DE515488C
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Adjustment device for key calculators
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DE494274C
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Ten switching device for sprocket wheel calculators
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DE522613C
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Key setting mechanism for calculating machines with setting disks with adjustable number of teeth
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DE500850C
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Device to facilitate division on calculating machines with drive wheels with an adjustable number of teeth
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DE488305C
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Calculating machine with several counters driven directly by the drive mechanism
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DE477641C
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Equipment on calculating machines for the transfer from the result work to the quotient work
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DE489026C
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Switching device for electric drives of calculating machines
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DE479532C
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Switching device for electric drives of calculating machines
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DE488635C
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Motor drive for calculating machines with special keys for the stop bolts corresponding to the numerical value
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DE521786C
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Control unit for calculating machines
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DE491579C
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Ten switching device for sprocket wheel calculators
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DE509451C
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Calculator with adjusting disks with adjustable number of teeth
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DE450246C
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Sprout wheel double calculating machine
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DE439920C
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Adjustment lever lock on calculating machines
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DE442296C
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Zero setting device for calculating machines
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DE436214C
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Slide switch for calculating machines
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DE435048C
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Slide switch for calculating machines
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DE455554C
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Calculator with adjusting disks with adjustable number of teeth
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