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| Patents for Charles A. Walsh | |||||
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| Number | Date | Patentee | Title | Type | |
| 456,276 | Jul. 21, 1891 | C.G. Parker | Machine for filing and setting saws | saw sharpening machines | |
| 473,685 | Apr. 26, 1892 | C.W. Weiss | Gas Engine | gas and gasoline engines | |