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| All Patents in class 254/101 | |||||
| Number | Date | Patentee | Title | Type | |
| 270,394 | Jan. 09, 1883 | L.J. Crecelius | Lifting Jack | jack screws | |
| 4,015,825 | Apr. 05, 1977 | R.S. Graafsma, R.H. Nehrig | Tiltable jack | automobile and truck jacks | |