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| Patents for John H. Barker | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,207,719 | Dec. 12, 1916 | H.L. Zabriskie, F. Diehl | Portable motor-support | ||
| 1,207,828 | Dec. 12, 1916 | H.L. Zabriskie, G.C. Marx | Portable motor-support | ||