US PATENT SUBCLASS 267 / 83
.~.~ Superposed layers; metal and non-metal

Current as of: June, 1999
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267 /   HD   SPRING DEVICES

80  DF  SPRING PANEL {9}
81  DF  .~ Composite springs of diverse material, e.g., metal and non-metal {2}
83.~.~ Superposed layers; metal and non-metal {1}
84  DF  .~.~.~> Metal layer is compressible coil spring

DEFINITION

Classification: 267/83

(under subclass 81) Device wherein two or more laminae are disposed one above the other, and adjacent laminae are metallic and nonmetallic, respectively.

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Articles,

416, 418, 432+, 444, 450, and 457+ for a nonstructural stock material product in the form of a composite web or sheet embodying a layer of metal next to a layer of nonmetal.