US PATENT SUBCLASS 138 / 159
.~.~.~ Bolt, nail, rivet or screw

Current as of: June, 1999
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138 /   HD   PIPES AND TUBULAR CONDUITS

156  DF  LONGITUDINALLY SEAMED {8}
157  DF  .~ Sectional {3}
158  DF  .~.~ With separate mechanical securing means {2}
159.~.~.~ Bolt, nail, rivet or screw {1}
160  DF  .~.~.~.~> Radially extending

DEFINITION

Classification: 138/159

(under subclass 158) Device having bolts, nails, rivets or screws securing them together.

SEE OR SEARCH CLASS

285, Pipe Joints or Couplings,

410, for a bolt or screw utilized to form a joint.