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The Amos Woodward friction water wheel governor patent number 103,813.

Amos Woodward friction governor from 1870 patent 103_813.jpg Amos Walter Woodward patent governor from 1870ThumbnailsAmos Woodward's first friction water wheel governor.Amos Walter Woodward patent governor from 1870ThumbnailsAmos Woodward's first friction water wheel governor.Amos Walter Woodward patent governor from 1870ThumbnailsAmos Woodward's first friction water wheel governor.
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EXIF Metadata

Make
Canon
Model
Canon PowerShot SX130 IS
DateTimeOriginal
2012:01:09 10:59:30
ApertureFNumber
f/3.5

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