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| All Patents of Type: engine block and head maintenance | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,484,708 | Oct. 11, 1949 | F.P. Healy | Work supporting cradle for grinding machines | surface grinders | |
| 2,851,831 | Sep. 16, 1958 | F.P. Healy | Hydraulic work-supporting clamp assembly | engine block and head maintenance | |