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| Patents Granted on 1976-04-13 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,949,462 | Apr. 13, 1976 | D.E. deCaussin | Removable Attachment for Automatic Milling Machines | milling machines | |
| 3,949,644 | Apr. 13, 1976 | W.G. Suechting | Pneumatic-hydraulic pumping device | hydraulic pumps | |