359 / | HD | OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS |
443 | DF | PROJECTION SCREEN {13} |
454 | DF | .~ Unitary sheet comprising plural refracting areas {1} |
455 | .~.~ Lenticular {2} | |
456 | DF | .~.~.~> Rear projection screen {1} |
458 | DF | .~.~.~> Stereoscopic imaging or three dimensional imaging |