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| Patents for H. A. Bowman | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,096,211 | May 12, 1914 | J.F. Woolf, E.J. Woolf | Explosive Engine | |
| 1,138,996 | May 11, 1915 | G.T. Strite, F.H. Bierman | Traction-engine | ||
| 1,194,569 | Aug. 15, 1916 | G.T. Strite, F.H. Bierman | Drive-gearing for traction-engines | ||
 | 1,286,398 | Dec. 03, 1918 | D.W. Onan | Oiling Device | |
 | 1,292,942 | Jan. 28, 1919 | J.F. Woolf, E.J. Woolf | Internal-Combustion Engine. | |