Hänvisningar finns i följande patent|
| US4411107 | 3 dec 1980 | 25 okt 1983 | Disco Co., Ltd. | Grinding wheel for flat plates | | US4445300 | 3 dec 1980 | 1 maj 1984 | Disco Co., Ltd. | Method for grinding flat plates | | US4545154 | 15 aug 1983 | 8 okt 1985 | Disco Co., Ltd. | Grinding wheel for flat plates | | US4597225 | 1 jul 1985 | 1 jul 1986 | | Interchangeable support disc for diamond-bearing plates of circular milling cutters | | US6015337 | 14 jul 1997 | 18 jan 2000 | Ebara Corporation | Polishing apparatus |
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