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| Patents for John D. Weaver | |||||
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| Number | Date | Patentee | Title | Type | |
| 450,151 | Apr. 14, 1891 | J. Harrold | Governor for steam-engines | steam engine governors | |
| 902,269 | Oct. 27, 1908 | J.D. Weaver | Spirit-Level | inclinometers | |