US PATENT SUBCLASS 136 / 256
.~.~ Contact, coating, or surface geometry

Current as of: June, 1999
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136 /   HD   BATTERIES: THERMOELECTRIC AND PHOTOELECTRIC

243  DF  PHOTOELECTRIC {2}
252  DF  .~ Cells {12}
256.~.~ Contact, coating, or surface geometry {1}
257  DF  .~.~.~> Luminescent layer or optical filter

DEFINITION

Classification: 136/256

Contact, coating, or surface geometry:

(under subclass 252) Device in which the claims recite the material, size or configuration of a contact, a covering film or the surface of the photocell.