US PATENT SUBCLASS 72 / 367.1
.~ Tube making or reshaping

Current as of: June, 1999
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72 /   HD   METAL DEFORMING

362  DF  PROCESS {8}
367.1.~ Tube making or reshaping {11}
368  DF  .~.~> Making
369  DF  .~.~> Bending
370.01  DF  .~.~> Comprising use of internal tool {4}
370.1  DF  .~.~> End forming {3}
370.14  DF  .~.~> Changing wall thickness {1}
370.16  DF  .~.~> Fin or thread forming {1}
370.19  DF  .~.~> Corrugations forming {1}
370.21  DF  .~.~> Groove forming
370.22  DF  .~.~> Using pressurized fluid during deformation
370.23  DF  .~.~> Change in cross section {2}
370.27  DF  .~.~> Forming holes in tube

DEFINITION

Classification: 72/367.1

Tube making or reshaping:

(under subclass 362) Process relating to the manufacture or deformation of a tube*.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1+, 6.1+, 28.1+, 31.01+, 37, 38, 39+, 48+, 53, 54+, 64+, 66, 67+, 127+, 184+, 199+, 253.1+, 274+, 292, 293+, 324+, 342.1+, 343+, for processes of tube making or reshaping by the use of various named types of apparatus.