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| Number | Title | Issue Date |
| 5492442 | Bone screw with improved threads A bone screw having a helical thread with a constant outside diameter and curling around a tapered core. The fine screw tip and thread at the tip of the screw can be inserted into a bone with minimal tearing or cracking of the bone. The thicker core just ... | 02/20/1996 |
| 5417533 | Bone screw with improved threads A bone screw having a helical thread that gradually increases in thickness from the tip to the head of the screw. The thin thread at the tip of the screw can be inserted into a bone with minimal tearing or cracking of the bone. The thicker treads ascendin... | 05/23/1995 |
