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| Patents for Edna V. Gustafson | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,362,790 | Dec. 21, 1920 | F. Hardinge | Gear mechanism for lathes | |
 | 1,393,777 | Oct. 18, 1921 | F. Hardinge | Method of and apparatus for lining furnace fireboxes | |
 | 1,403,952 | Jan. 17, 1922 | F. Hardinge | Fuel oil burner | |
 | 1,447,384 | Mar. 06, 1923 | F. Hardinge | Fuel oil burner | |
 | 1,546,580 | Jul. 21, 1925 | F. Hardinge | Valve | |