US PATENT SUBCLASS 494 / 69
.~.~.~ Each extending generally normally to region, and having surface displaying three-dimensional configuration

Current as of: June, 1999
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494 /   HD   IMPERFORATE BOWL: CENTRIFUGAL SEPARATORS

43  DF  ROTATABLE BOWL {16}
67  DF  .~ Including structure located within vertically-oriented bowl and extending outwardly from central region (e.g., axis) thereof {2}
68  DF  .~.~ Comprising plurality of elements, each concentrically encircling axis of bowl and spaced therealong {2}
69.~.~.~ Each extending generally normally to region, and having surface displaying three-dimensional configuration

DEFINITION

Classification: 494/69

Each extended generally normally to region, and having surface displaying three-dimensional configuration:

(under subclass 68) Apparatus wherein the outward extension of each of the elements is at more or less of a right angle to the axis, or to a locus somewhat removed from the axis, and wherein each element has at least one of its two, principal (i.e., more or less axially-facing) surfaces formed with a pattern which includes a depth (i.e., a normal-to-the-surface) dimension.

(1) Note. See (1) Note of subclass 73 below.

(2) Note. See (2) Note of subclass 73 below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

73, as explained in the reference thereto appearing in each of (1) Note and (2) Note above.