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| Patents Granted on 1977-03-22 | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-1,007,257 | Mar. 22, 1977 | J.J. Fatula | Self-centering rolls | ||
| 4,013,152 | Mar. 22, 1977 | C.O. Jones, Jr. | Mechanical clutch for cyclic machines | metalworking machine mechanisms | |
| 4,013,176 | Mar. 22, 1977 | J.J. Schachte, E.R. Lohneis | Unitary Work Changer for Machining Center | workpiece changers and storage mechanisms | |