GB712750A
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Improvements in or relating to calculating machines
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US2630121A
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Record sheet holder
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US2682028A
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Time switch for motors
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GB650728A
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Improvements in or relating to finger-operable actuator buttons for calculating machines, typewriters and other office machines
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GB630522A
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Improvements in or relating to an electric motor or like controller
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US2547063A
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Key-driven calculating machine
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GB640347A
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Improvements in or relating to calculating machines
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GB640445A
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Improvements in or relating to key-responsive calculating machines
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US2485213A
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Actuator button
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US2494181A
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Electrical circuit controller
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US2397685A
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Device for distribution of accounts
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US2273491A
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Business machine
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US2026245A
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Tabulator
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US2018933A
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Idle lock for calculating machines
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US2088004A
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Motor governor
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US2060702A
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Calculating machine
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US2063962A
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Key-responsive calculating machine
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US1905579A
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Calculating machine
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US1817640A
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Record sheet holder for facilitating distribution of accounts
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US1927856A
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Calculating machine
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