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| Patents for Crowell Mfg. Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 299,484 | May 27, 1884 | H.B. Larzelere | Portable Engine | |
| 300,270 | Jun. 10, 1884 | H.B. Larzelere | Portable Engine | ||
| 300,271 | Jun. 10, 1884 | H.B. Larzelere | Traction Engine | ||