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| Patents for Edward H. Parks | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 323,723 | Aug. 04, 1885 | E.H. Parks | Boring Machine | |
| 333,478 | Dec. 29, 1885 | E.H. Parks | Grinding Machine | ||
| 429,700 | Jun. 10, 1890 | E.H. Parks | Grinding Machine | ||
 | 505,606 | Sep. 26, 1893 | E.H. Parks | Gear-cutting machine | |
 | 525,771 | Sep. 11, 1894 | E.H. Parks | Mechanism for Taking Up Lost Motion | |
 | 624,676 | May 09, 1899 | E.H. Parks | Gear-cutting machine | |
| 797,216 | Aug. 15, 1905 | J.J. Thacher, E.H. Parks | Grinding-Machine | ||