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| Patents for Herman Isler | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,733,094 | Oct. 22, 1929 | H. Isler | Centerless Grinder | centerless grinders | |
| 1,948,113 | Feb. 20, 1934 | H. Isler | Centerless Work Feed | centerless grinders | |