US PATENT SUBCLASS 72 / 466.9
.~.~.~ Metal spring (e.g., coil or leaf)

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

462  DF  TOOL AND/OR TOOL HOLDER {7}
465.1  DF  .~ Including flexible or yieldable tool or support {7}
466.8  DF  .~.~ Resilient material {1}
466.9.~.~.~ Metal spring (e.g., coil or leaf)

DEFINITION

Classification: 72/466.9

Metal spring (e.g., coil or leaf):

(under subclass 466.8) Apparatus wherein the resilient material is a mechanically configured metal member which operates within the elastic limits of that metal.

(1) Note. A metal member experiencing permanent deformation is excluded from this subclass.