US PATENT SUBCLASS 356 / 356
.~.~.~ Of displacement or distance

Current as of: June, 1999
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356 /   HD   OPTICS: MEASURING AND TESTING

345  DF  BY LIGHT INTERFERENCE (E.G., INTERFEROMETERS) {11}
354  DF  .~ With wavefront division (e.g., by diffraction) {1}
355  DF  .~.~ For dimensional measurement (e.g., thickness) {1}
356.~.~.~ Of displacement or distance

DEFINITION

Classification: 356/356

Of displacement or distance:

(under subclass 355) Subject matter including means for determining small changes in position of an article or small length of space between two points.

SEE OR SEARCH THIS CLASS, SUBCLASS:

3+, for range or remote distance measurement.

358, for light interference mensuration of displacement or distance without wavefront division.

373+, for optical mensuration of article displacement, per se.