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GB438107A
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Improvements in or relating to statistical machines
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GB424411A
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Improvements in and relating to card controlled machines and cards for use therewith
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DE583602C
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Device for reading punch cards
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DE572162C
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Card punching machine with printing unit
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DE603744C
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Tabulating machine with group control device
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US2296075A
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Card-controlled bookkeeping machine
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DE572337C
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Card punching machine
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GB335898A
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Improvements in combination adding and printing punch
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GB329009A
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Improvement in machines for punching statistical record cards
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GB324248A
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Improvements in machines for punching statistical record cards
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DE528073C
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Printing device for numbering statistical punch cards
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DE507571C
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Connection of a typewriter with a card punching machine
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DE499763C
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Connection of a typewriter or typewriter or the like with a card punching machine
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DE526501C
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Card punching machine for the production of statistical punch cards
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GB303844A
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Improvements in machines for punching statistical record cards
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DE499762C
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Connection of a card punching machine with a recording machine (typewriter, calculating machine, etc.)
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GB279023A
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Improvements in perforated card controlled machines
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DE512755C
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Tabulator
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GB269946A
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Improvements in designation control for perforated card controlled machines
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DE589437C
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Sorting machine for punch cards
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