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| Patents for Charles L. Griesbauer | |||||
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| Number | Date | Patentee | Title | Type | |
| 898,972 | Sep. 15, 1908 | H.O. Costello | Quick-adjusting Micrometer | micrometers | |
| 1,250,682 | Dec. 18, 1917 | W.F. Sholl | Combination Screwdriver and Tweezers | screwdrivers | |