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| Patents for John L. Pringle | |||||
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| Number | Date | Patentee | Title | Type | |
| 850,873 | Apr. 16, 1907 | J.L. Pringle | Miter-box | miter boxes | |
| 869,649 | Oct. 29, 1907 | J.L. Pringle | Twist-Lock Gage | marking gauges | |
| 890,575 | Jun. 09, 1908 | J.L. Pringle | Auxiliary Sole for Transitional Plane | plane beds | |