US PATENT SUBCLASS 81 / 57.38
.~.~ With tensioning means
Current as of:
June, 1999
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81 /
HD
TOOLS
52
DF
WRENCH, SCREWDRIVER, OR DRIVER THEREFOR
{27}
54
DF
.~ Machine {10}
57.38
.~.~ With tensioning means
DEFINITION
Classification: 81/57.38
(under subclass 54) Wrench or screwdriver provided with means to apply a predetermined tension to the work.