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| All Patents in class 415/211.1 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 189,380 | Apr. 10, 1877 | C.D. Page | Hydraulic Engine | ||
| 249,274 | Nov. 08, 1881 | F.W. Tuerk, Jr. | Water Motor | ||
| 332,249 | Dec. 15, 1885 | O.E. North, M.F. Graham | Motor | ||
| 536,842 | Apr. 02, 1895 | R.C. Shepherd | Water Motor | ||
| 576,728 | Feb. 09, 1897 | D. Hug | Water Wheel | ||
| 1,537,465 | May 12, 1925 | E.C. Hutchinson | Louver Type Baffle Plate | ||