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| Patents for John H. Diehl | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,128,661 | Apr. 14, 1964 | R.F. Nenstiel, W.D. Weikart, J.H. Diehl | Band saws | bandsaws | |
| 3,146,628 | Sep. 01, 1964 | J.H. Diehl, E.C. Warrick, D.D. Pettigrew | Power tool and transmission therefor | drill presses | |