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| All Patents in class 400/430 | |||||
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| Number | Date | Patentee | Title | Type | |
| 819,366 | May 01, 1906 | H.A. Moyer | Securing means for the hangers of type-writing machines | typewriters | |
| 820,935 | May 15, 1906 | H.A. Moyer | Type-writing machine | typewriters | |