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| Patents for Leif Eric De Neergaard, deceased (Estate of) | |||||
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| Number | Title | Classification(s) | |||
| 3,230,516 | Control System for Machine Tools and the Like | 318/162, 318/568.1, 318/608, 360/79 | |||
| 3,296,606 | Control System for Machine Tools Utilizing Magnetic Recording | 360/79 | |||