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| Patents for T. E. Hardenbergh Jr. | |||||
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| Number | Date | Patentee | Title | Type | |
| 930,354 | Aug. 10, 1909 | H.N. Covell | Logging-locomotive | sawmill log handling | |
| 966,479 | Aug. 09, 1910 | F.C. Schoen | Hydraulic telemotor | ||
| 994,876 | Jun. 13, 1911 | F.C. Schoen | Combined steam and hand steering engine | hoists, winches, come-alongs | |