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Z. Miller Improvement in Grain Separating Attachment to Threshing Machines - DPLA - 9feca88ca10c8991c039ca15d933d884 (page 3)

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technical diagrams patent drawings high resolution
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30/01/1872
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http://commons.wikimedia.org/
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label_outline Explore Patent Drawings, Technical Diagrams

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technical diagrams patent drawings high resolution