US PATENT SUBCLASS 249 / 100
.~.~ Tubular facing connected end to end, e.g., bell or spigot, etc.

Current as of: June, 1999
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249 /   HD   STATIC MOLDS

98  DF  FORMING PRODUCT HAVING JOINT OR COUPLING {2}
99  DF  .~ Lapped interfitted facing, alternating reversing identical facing, or keyways {1}
100.~.~ Tubular facing connected end to end, e.g., bell or spigot, etc.

DEFINITION

Classification: 249/100

(under subclass 99) Apparatus having means for forming joint connecting structure on a tubular product.

SEE OR SEARCH CLASS

285, Pipe Joints or Couplings,

328+, for pipe joints or couplings with particular interface.