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| Patents for P. H. Lawler | |||||
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| Number | Date | Patentee | Title | Type | |
| 33,153 | Aug. 27, 1861 | P.H. Lawler, J.B. Dougherty | Improvement in machines for forming barrel-heads | cooper | |
| 76,782 | Apr. 14, 1868 | P.H. Lawler | Improvement in shingle machines | shingle machines | |