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| Patents for Clarence I. Steinback | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,322,918 | Apr. 06, 1982 | C.I. Steinback | Abrasive grinding machine | sanding machines | |
| 4,407,096 | Oct. 04, 1983 | C.I. Steinback | Method and apparatus for surface grinding | sanding machines | |
| 4,704,823 | Nov. 10, 1987 | C.I. Steinback | Abrasive surfacing machine | metal sanding machines | |