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| Patents for Harig Mfg. Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,449,459 | Sep. 14, 1948 | T. Eckert | Perforator Grinding Fixture | grinding attachments | |
| 3,094,821 | Jun. 25, 1963 | T. Eckert | Grinding fixtures | grinding attachments | |