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| Patents for Robert L. Greenlee | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 143,236 | Sep. 30, 1873 | R.L. Greenlee | Improvement in sash and door clamps | |
 | 199,285 | Jan. 15, 1878 | R.L. Greenlee, R.S. Greenlee | Improvement in mortising and boring machines | |
| CA-10,367 | Aug. 18, 1879 | R.L. Greenlee | Sash and door clamps | ||
 | 283,341 | Aug. 14, 1883 | R.S. Greenlee | Hollow-chisel mortising machine | |
 | 326,640 | Sep. 22, 1885 | R.L. Greenlee, R.S. Greenlee | Machine-table | |
 | 418,978 | Jan. 07, 1890 | R.L. Greenlee, R.S. Greenlee | Mortising-machine | |