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| All Patents in class 74/597 | |||||
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| Number | Date | Patentee | Title | Type | |
| 232,739 | Sep. 28, 1880 | J.F. Marks | Traction Engine | steam traction engines | |
| 1,428,847 | Sep. 12, 1922 | F.W. Parsons, F.A. Jimerson | Built-up crank shaft | pneumatic motors | |
| 1,431,415 | Oct. 10, 1922 | F.W. Parsons, F.A. Jimerson | Built-up crank shaft | pneumatic motors | |
| 1,431,416 | Oct. 10, 1922 | F.W. Parsons, F.A. Jimerson | Built-up crank shaft | pneumatic motors | |