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DE697152C
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Printing device for calculating, registering and invoicing machines
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DE679696C
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Calculating machine with printing mechanism and several counters
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DE694360C
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Multi-counting calculating and recording machine
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DE633359C
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Multi-counting calculating and recording machine
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DE651300C
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Multi-counting calculating and recording machine
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DE639663C
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Typewriter
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DE624726C
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Multi-counting calculating and recording machine
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DE626088C
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Multi-counting calculating and recording machine
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DE624725C
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Multi-counting calculating and recording machine
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DE617341C
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Multi-counting calculating and recording machine
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DE643963C
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Auxiliary equipment for printing positive and negative sums
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DE609609C
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Counter for calculating and recording machines with addition and subtraction effects
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DE563015C
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Calculating machine with printing unit and groups of column counters and total counters
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DE570500C
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Adding machine with automatic total printing
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DE585006C
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Device for the printing of clear characters on adding and calculating machines with several counters
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DE565441C
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Display device for adding and calculating machines with several counters
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