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| All Patents in class 91/176 | |||||
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| Number | Date | Patentee | Title | Type | |
| 51,166 | Nov. 28, 1865 | J.S. Foster | Revolving Cylinder Engine | steam engines | |
| 120,846 | Nov. 14, 1871 | N.B. Baldwin | Propelling Power | steam traction engines | |
| 640,039 | Dec. 26, 1899 | A.J. Johnson, C.T. Smith | Pneumatic Drill. | pneumatic tools | |
| 644,598 | Mar. 06, 1900 | C.O. Heggem | Motor Vehicle | automobiles | |
| 755,733 | Mar. 29, 1904 | T. Barrow | Motor | pneumatic motors | |
| 1,286,122 | Nov. 26, 1918 | C.E. Sargent | Motor for Railroad Vehicles | internal combustion engines | |