US3988745A
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Printing ink supply device for ink jet printer
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GB1416980A
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Printing head
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DE2354249A1
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PUMPING DEVICE COMPOSED OF A MEMBRANE CONNECTED TO A PIEZO ELECTRIC CRYSTAL
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US3610059A
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Arrangement at keyboard
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US3466939A
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Mechanical couplings
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FR1515958A
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Device for controlling an arbitrary number of punches of a punching device
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GB945586A
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Improvements in typewriting and like machines
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FR1301587A
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Digit input mechanism for adding machines, accounting machines and other calculating machines
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ES198040A1
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A PAPER FEED MECHANISM IN ADDING AND SIMILAR MACHINES
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GB709018A
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Paper feeding mechanism in adding machines or the like
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FR1043004A
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Paper feed mechanism for adding machines or the like
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US2692036A
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Paper feeding mechanism for adding machines or the like
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GB336997A
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Improvements in calculating machines
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US1957617A
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Calculating machine
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US1510118A
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Bearing for oscillatory motion
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US1505111A
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Recording weighing scale
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GB150707A
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Improvements in automatic balance weighing apparatus
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FR523485A
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Improvements to automatic weighing devices
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FR522197A
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Improvements to calculating machines
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FR516557A
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Improvements in calculating machines with clutch revolution counter, to automatically block the clutch during movement of the handle
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