US PATENT SUBCLASS 33 / 371
.~.~.~ Requiring no modification of the work

Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

300  DF  INDICATOR OF DIRECTION OF FORCE TRAVERSING NATURAL MEDIA {23}
365  DF  .~ Level or plumb, terrestrial gravitation responsive {9}
370  DF  .~.~ Work, or workman, attaching means {1}
371.~.~.~ Requiring no modification of the work {2}
372  DF  .~.~.~.~> Elastic bias type clamping
373  DF  .~.~.~.~> Encircling clamp, loop, or strap

DEFINITION

Classification: 33/371

(under subclass 370) Device adapted for attachment to the workpiece without any modification thereof.

(1) Note. Nails and screws modify the workpiece.