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| Patents for Calvin J. Weld | |||||
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| Number | Date | Patentee | Title | Type | |
| 149,802 | Apr. 14, 1874 | J.W. Smith, C.J. Weld | Improvement in water-wheels | turbine water wheels | |
| 273,650 | Mar. 06, 1883 | C.J. Weld | Shingle-machine | shingle machines | |
| CA-16,804 | May 04, 1883 | C.J. Weld | Improvement in shingle-machines | shingle machines | |
| CA-17,549 | Aug. 28, 1883 | C.J. Weld | Water wheel | water wheels | |