US PATENT SUBCLASS 279 / 95
.~ Bottomless

Current as of: June, 1999
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279 /   HD   CHUCKS OR SOCKETS

9.1  DF  SOCKET TYPE {27}
95.~ Bottomless {1}
96  DF  .~.~> Friction grip

DEFINITION

Classification: 279/95

(under subclass 9) Devices wherein a handle or other holder is perforated so that a passage extends longitudinally and completely through the holder or to another passage transverse of the axis of the holder.

(1) Note. These are typical of connections between screw-driving and similar bits and their handles.