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| All Patents in class D8/86 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,558,763 | Oct. 27, 1925 | A.L. Rossberg | Angularly-Adjustable Tool Holder | screwdriver mechanisms | |
| 1,741,349 | Dec. 31, 1929 | R.R. Sullivan | Improvement in Screwdriver blades | screwdriver blades | |
| 2,206,364 | Jul. 02, 1940 | J.N. Petre | Screw Driver Attachment | screwdriver mechanisms | |
| D150,800 | Aug. 31, 1948 | J. Magnus, Jr. | Socket Screw Driver | screwdrivers | |