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| All Patents in class 137/625.27 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,537,437 | May 12, 1925 | G. Graffinberger | Trimmer-saw mechanism | circular sawmills | |
| 1,629,712 | May 24, 1927 | S.L. Kneass | Injector | water injectors | |