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George F. Gray

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Details George F. Gray George F. Gray

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Combination lens mounting and film support for microfilm...

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Film feeding devices

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Film processing apparatus

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Film processors

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Film processors

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Feeding apparatus

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Film processors

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Flow cameras

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Method of photography employing a scanning camera

G - Physics – 03 – B

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Mining appratus

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Profile ID: LFCA-PAI-P-106710

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