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| Patents for J. H. Lawlor | |||||
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| Number | Date | Patentee | Title | Type | |
| 180,115 | Jul. 25, 1876 | M. Covel | Improvement in saw-sharpening machines | saw sharpening machines | |
| 221,844 | Nov. 18, 1879 | H. Messer | Improvement in nail-feeding attachments for box-nailing machines | nailing machines | |