| 21. | The dissidents used the room and kept the duplicator in prominent place, but worked on a modern machine.
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| 22. | In the late 1960s, mimeographs, spirit duplicators, and hectographs began to be gradually displaced by photocopying.
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| 23. | Bob Cobbing, who was also a sound poet, had been experimenting with typewriter and duplicator since 1942.
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| 24. | By the late 1890s, an improved mechanical duplicator, the pantograph, was developed which used mechanical linkage.
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| 25. | Digital duplicators can provide a reliable and cost efficient alternative to toner-based copiers or offset printing equipment.
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| 26. | It was HD-DVD that was easy for DVD duplicators to convert to, not Blu-Ray.
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| 27. | One of her few starring roles was in the 1965 science fiction film " The Human Duplicators ".
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| 28. | I've got seven albums, including a brand-new one just off to the duplicator this week.
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| 29. | Tens of thousands of its Model 350 and 360 duplicator were sold, many of which are still in use.
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| 30. | These were printed in limited numbers on a stencil duplicator though some material has been preserved in an online archive:
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