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| Patents for Walker Mfg. Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,437,606 | Dec. 05, 1922 | V. Jakob, J.J. Mizer | Vehicle roller jack | vehicle mechanic | |
| 1,621,314 | Mar. 15, 1927 | I.E. Dearsley | Lifting jack | vehicle mechanic | |