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| Patents for G. F. Warren | |||||
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| Picture | Number | Date | Patentee | Title | |
 | RE8,291 | Jun. 18, 1878 | G. Westinghouse, Jr. | Improvement in pipe-couplings | |
 | 349,369 | Sep. 21, 1886 | J. Spiel | Petroleum and Gas Engine | |
 | 390,289 | Oct. 02, 1888 | W. Ellis | Machine for rendering laths and cutting veneers | |