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| Patents for F. X. Hooper Co., Inc. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,837,617 | Dec. 22, 1931 | H.B. Greenwood | Bearing support for composition inking rollers | ||
| 2,030,027 | Feb. 04, 1936 | H.B. Greenwood | Shaft adjusting means | ||
| 2,030,028 | Feb. 04, 1936 | H.B. Greenwood | Shaft adjusting means | ||