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| Patents for Barnett, Herrman & Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 114,571 | May 09, 1871 | T. Leffel | Improvement in water-wheels | |
 | 130,918 | Aug. 27, 1872 | J.W. Hill | Improvement in apparatus for closing and operating annular series of water-wheel gates | |