Matches 301 - 350 out of 385 < 1 2 3 4 5 6 7 8 >
Match Document Document Title
3256875 Flexible gastroscope  
3253505 Projection of images onto inclined screens  
3235733 Photosensitive radiation tracker using plural prisms  
3222515 Room light control  
3195404 Anamorphosing optical system  
3179797 Device for controlling glare in luminaire  
3155979 Rotating prism optical system  
3137794 Directionally sensitive light detector  
3129895 Shielding prism  
3089052 Cathode ray tube faceplate construction  
3062103 Optical filter  
3045542 Projection system corrected for marginal distortion  
3038756 Window arrangements, particularly for engine driven vehicles  
3001062 Light refractor  
2983183 Beam combining prism  
2981142 Prism art device  
2975668 Optical scanning device  
2966091 Industrial refractometers  
2963936 Rear vision means having prismatic window  
2949830 Photographic camera  
2942538 Character presentation scheme for phototypographical machine  
2882784 Conical refractor  
2881654 Biconical refractor  
2860542 Continuous motion picture apparatus, composite prism  
2855819 Composite prisms and prismatic magnification systems comprising same  
2843015 Prism magnification systems comprising three or more prisms  
2829363 Automatic dew-point apparatus  
2821111 Anamorphotic optical systems  
2816480 Prism type anamorphoscopic device  
2810323 Anamorphotic optical systems  
2792751 Refracting compound prism anamorphotic optical systems  
2767629 Optical device for a stereoscopic camera with a horizontal movement of the film  
2705434 Wave-length indicator in spectral apparatus  
2689298 Means for obtaining even illumination from a single source  
2669916 Telemetric focusing device  
2655832 Range finder adjusting mechanism  
2494356 Apparatus for illuminating images for projectors  
2446726 Range finder, height finder, and like optical observation instrument  
2427996 Temperature compensator for refractometers  
2405960 Collimating system  
2396510 Stereoscope  
2305777 Measuring prism for refractometers  
2305776 Optical system for spectral apparatus with fixed deviation  
2248758 Optical system for reducing the viewing angle of certain devices such as photoelectric cells  
2212484 Telescopic instrument for the examination of body cavities  
2206169 Light modulating system  
2203647 Ornamental glassware  
2150544 Device for deviating a pencil of light rays  
2088660 Anamorphosing optical system  
1961601 Biprism for spectroscopes  
Matches 301 - 350 out of 385 < 1 2 3 4 5 6 7 8 >