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| Patents for Charter Gas Engine Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 270,202 | Jan. 09, 1883 | J. Charter | Gas Engine | |
 | 270,203 | Jan. 09, 1883 | J. Charter | Gas Engine | |
 | 335,564 | Feb. 09, 1886 | J. Charter | Gas Engine | |
 | 356,447 | Jan. 25, 1887 | J. Charter | Gas Engine | |
 | 370,242 | Sep. 20, 1887 | J. Charter | Gas Engine | |