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| All Patents in class 451/369 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,030,744 | Apr. 24, 1962 | A.E. Mueller | Air film bearing for machine tools | grinders | |
| 3,861,088 | Jan. 21, 1975 | R.F. Brieco | Fixture for Supporting a Tool Subject to Grinding Including Accurately Positionable Tilting Angle Plate | grinding fixtures | |
| 5,545,081 | Aug. 13, 1996 | L.C. Brickner, X. Lei, J.L. Haffely | Tool fixture for abrading apparatus | ||