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| Patents for Peter Fields & Son | |||||
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| Number | Date | Patentee | Title | Type | |
| 55,685 | Jun. 19, 1866 | T.W. Mahler | Water Wheel | turbine water wheels | |
| 89,674 | May 04, 1869 | T.W. Mahler | Improved Gate for Water Wheels | turbine water wheels | |