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| US4109691 | 21 déc. 1977 | 29 août 1978 | | Combination torque release screw and screw driver |
| US4325153 | 22 oct. 1979 | 20 avr. 1982 | | Combined screwdriver and boring apparatus |
| US4339971 | 28 janv. 1980 | 20 juil. 1982 | | Fastener and driving tool |
| US4528874 | 17 janv. 1983 | 16 juil. 1985 | | Screw fasteners and drivers |
| US4572039 | 30 mai 1984 | 25 févr. 1986 | | Interlocking lock screw with screw driver |
| US4589154 | 17 oct. 1984 | 20 mai 1986 | | Method and apparatus for forming the head of a high torque fastener |
| US4590825 | 11 oct. 1984 | 27 mai 1986 | | High torque fastener and driving tool |
| US4625598 | 10 mai 1985 | 2 déc. 1986 | | Positive engagement screw driver tool |
| US5438895 | 29 avr. 1994 | 8 août 1995 | | Fastener and driving tool |
| US6886431 | 16 sept. 2002 | 3 mai 2005 | | Combination screw driver blade tip and cooperating interlocking screw slot |
| US6973860 | 30 oct. 2003 | 13 déc. 2005 | J&M Innovative Products, LLC | Split-tip screwdriver with protective sleeve |
| US7028592 | 28 juin 2004 | 18 avr. 2006 | | Tool element and screw for mating engagement therewith |
| US7730812 | 7 nov. 2007 | 8 juin 2010 | | Screw head and tool for use therewith |
| USD480618 | 17 juil. 2002 | 14 oct. 2003 | | Combination screw driver blade tip and cooperating interlocking screw slot |
| USD659501 | 24 déc. 2011 | 15 mai 2012 | | Screwdriver bit |
| USD659502 | 24 déc. 2011 | 15 mai 2012 | | Screwdriver bit |
