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| Patents for Peter Gerlach | |||||
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| Number | Date | Patentee | Title | Type | |
| 130,802 | Aug. 27, 1872 | P. Gerlach, A. Knipper, J. Gerlach | Improvement in stave-sawing machines | cooper | |
| 190,574 | May 08, 1877 | P. Gerlach | Improvement in crosscut-saw handles | crosscut saw handles | |
| 620,909 | Mar. 14, 1899 | P. Gerlach | Sod-trimmer | ||