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| All Patents in class 294/89 | |||||
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| Number | Date | Patentee | Title | Type | |
| 153,009 | Jul. 14, 1874 | R. Nesbitt | Improvement in expansible wedges | axes | |
| 314,243 | Mar. 24, 1885 | T. Heathcote | Stone Lifter | stoneworking | |
| 2,848,269 | Aug. 19, 1958 | E.V. Havens, E.H. Johnson | Loading Mechanism | ||