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| Patents for Harry H. Bridenthal | |||||
| Number | Date | Patentee | Title | Type | |
| 212,889 | Mar. 04, 1879 | H.H. Bridenthal | Road Engine | steam traction engines | |
| 252,720 | Jan. 24, 1882 | H.H. Bridenthal | Road Engine | steam traction engines | |
| 351,733 | Nov. 02, 1886 | H.H. Bridenthal | Road Engine | steam traction engines | |