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| Patents Granted on 1973-07-31 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,748,941 | Jul. 31, 1973 | R.E. Richards | Guide pin assembly for die plate | tool and die maker | |
| 3,749,335 | Jul. 31, 1973 | T.V. Williams | Autopilot System Controlling Entry of a Craft Into Forbidden Zones | electronic circuitry and apparatus | |