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| Patents for John R. M. Crawford | |||||
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| Number | Date | Patentee | Title | Type | |
| 280,354 | Jul. 03, 1883 | J.R. Crawford | Shingle-machine | shingle machines | |
| 302,192 | Jul. 15, 1884 | J.R. Crawford | Hand shingle-machine | shingle machines | |