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| All Patents in class 65/261 | |||||
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| Number | Date | Patentee | Title | Type | |
| 594,343 | Nov. 23, 1897 | M.J. Owens, H.J. Colburn | Glass-blowing machine | ||
| 632,486 | Sep. 05, 1899 | H.J. Colburn | Automatic blast-regulator for glass-blowing furnaces | ||
| 659,291 | Oct. 09, 1900 | L.H. Colburn | Glass-blowing machine | ||