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| Patents for John N. Gladden | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 2,446,274 | Aug. 03, 1948 | J.N. Gladden | Valve | |
| 2,847,829 | Aug. 19, 1958 | J.N. Gladden | Power Braaking System | ||
| 2,938,969 | May 31, 1960 | C.E. Rees, Jr., J.N. Gladden | Sequence Timer | ||
| 2,959,450 | Nov. 08, 1960 | C.E. Rees, Jr., J.N. Gladden | Power Braking System and Control Unit Therefor | ||