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| Patents for John Charter | |||||
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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 | |
| 292,894 | Feb. 05, 1884 | 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 | |
 | 415,446 | Nov. 19, 1889 | J. Charter | Hydrocarbon or Gas Engine | |
 | 455,388 | Jul. 07, 1891 | J. Charter | Gas Engine | |
 | 472,106 | Apr. 05, 1892 | J. Charter | Gas Engine | |
 | 477,295 | Jun. 21, 1892 | J.A. Charter | Gas Engine | |