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| 5338926 | X-ray imaging tube having a light-absorbing property |
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| 5317144 | Wave front aberration measuring apparatus having means for adjust... |
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| 5311030 | Tape end detecting device for tape decks using center and side pr... |
| 5308992 | Currency paper and banknote verification device |
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| 5304812 | Optoelectronic device, information apparatus and data transmissio... |
| 5302834 | Optical pickup and tilt control device including a plurality of ... |
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| 5291006 | Authenticity identifying system for information storage cards |
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| 5286968 | Method and device for multichannel analog detection |
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| 5272329 | Optical pickup device using a holographic optical element and an ... |
| 5268580 | Bar code enhancement system and method for vision scanners |
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| 5250805 | Optical sensing technique providing built in test |
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| 5247168 | Light frequency converter having laser device connected in series... |
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