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| Patents Granted on 1992-12-__ | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,170,689 | Dec. 15, 1992 | J. Dvorak | Metal working machine | metal punching machines | |
| 5,174,693 | Dec. 29, 1992 | R.C. Lee, L.G. Lee, F.A. McLean | Drilling jig | ||
| 5,174,742 | Dec. 29, 1992 | G.A. Putney | Rotary Air Motor with Curved Tangential Vanes | ||