US PATENT SUBCLASS 359 / 228
.~ Fluid

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

227  DF  LIGHT CONTROL BY OPAQUE ELEMENT OR MEDIUM MOVABLE IN OR THROUGH LIGHT PATH {6}
228.~ Fluid

DEFINITION

Classification: 359/228

Fluid:

(under subclass 227) Subject matter including a liquid or gas.

(1) Note. The fluid itself or an element in the fluid may constitute the light controlling element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

296, for realignment or repositioning of particles (possibly opaque) suspended in a fluid in response to an applied field.

665+, for a fluid lens.

886, for a fluid filter.