1975-10-14
1978-08-08
Jones, Jr., James L.
Bridges
145 50D, B25B 1500
Patent
active
041050568
ABSTRACT:
A screw driver having a foot portion on the lower extremity of its blade which includes opposed upstanding faces of a height less than the depth of a screw slot into which they are inserted to increase the effectiveness of the blade in gripping the sidewalls of a screw slot and yet provide a durable wear resistant screw driver.
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Jones Jr. James L.
Zatarga J. T.
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