Tools – Wrench – screwdriver – or driver therefor – Handle or shank
Reexamination Certificate
2011-01-25
2011-01-25
Thomas, David B (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Handle or shank
C081S121100
Reexamination Certificate
active
07874233
ABSTRACT:
A power input end and a power output end are provided. The tool has an interior bore along its entire length. The tool has an exterior surface with a hexagonal cross sectional configuration along its length from the power input end. The tool has a surface with a square cross sectional configuration from the power output end.
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