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| Patents for Nelson D. Cooper | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,473,572 | Jun. 21, 1949 | E.A. Ruchty, N.D. Cooper | Magnetic Servo Operator | ||
| 2,556,318 | Jun. 12, 1951 | N.D. Cooper | Electrically Operated Sevopower Actuator | ||
| 2,558,275 | Jun. 26, 1951 | N.D. Cooper, H.C. Kemper, H.J. Siekmann | Lathe Control Mechanism | ||
 | 2,660,932 | Dec. 01, 1953 | N.D. Cooper, H.C. Kemper | Automatic cycle machine tool | |
| 2,697,373 | Dec. 21, 1954 | N.D. Cooper, G.W. Luning, G.J. Kasselmann, H.J. Siekmann | Tracer Controlled Facing Lathe | ||