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| Patents for George Challoner's Sons | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 124,101 | Feb. 27, 1872 | A. White | Improvement in shingle-machines | |
| 296,525 | Apr. 08, 1884 | J.W. Challoner, J. Challoner | Shingle-sawing machine | ||
 | 318,956 | Jun. 02, 1885 | F. Challoner | Shingle-sawing machine | |
 | 379,602 | Mar. 20, 1888 | J.J. Philbrick | Barrel-head-making machine | |
 | 415,857 | Nov. 26, 1889 | F. Challoner | Spalt-dropping mechanism for shingle-sawing machines | |
| 582,592 | May 11, 1897 | W.J. Tunmore | Spalt Ejector for Shingle Sawing Machines | ||