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| Patents Granted on 1992-12-29 | |||||
| Number | Date | Patentee | Title | Type | |
| 5,174,693 | Dec. 29, 1992 | F.A. McLean, R.C. Lee, L.G. Lee | Drilling jig | ||
| 5,174,742 | Dec. 29, 1992 | G.A. Putney | Rotary Air Motor with Curved Tangential Vanes | ||