Matches 201 - 250 out of 252 < 1 2 3 4 5 6 >
Match Document Document Title
3321905 Display device  
3315391 Illusory motion display devices and method of making same  
3302541 Exposure control apparatus  
3281965 Controlled visibility device for an aircraft  
3281604 Polarizing light attenuator for photoconductive cells  
3266033 Display panel having stationary and movable polarizing elements  
3252375 Optical viewing system with polarized beam splitting element  
3218919 Apparatus for making color compositions  
3209642 Digital converter of photometric value  
3183763 Polarization analyzers for optical systems employing polarized light  
3177761 Polariscope having simultaneously rotatable waveplates  
3171883 Instrument for checking and inspecting contact lenses  
3162008 Display device  
3159844 Electromagnetically controlled hood device for welding and cutting  
3158675 Apparatus for measuring the thickness of thin transparent films  
3151205 Viewing instruments with rotatably adjustable optical elements  
3149236 Atomic battery and test instrument  
3137784 Device for protecting the eyes of welders  
3117176 Aircraft glide path radius vector and altitude indicating system  
3104273 Apparatus for projecting selective animated images  
3100418 Optical apparatus for producing changing designs  
3074397 Spectacles for the correction of visual defects, such as especially of onesided weakness of vision  
3068362 Polarized light control  
3062087 Apparatus for investigating polarized light phenomena  
3054204 Animation illustrator  
3049051 Arrangement with polarizing grating for the photographic establishment of filters with black and white networks  
3042827 Motor vehicle headlight construction and polarized glasses used therewith  
3028787 Copying of scales  
2995981 Apparatus for displaying vectographic prints  
2989787 Fail-safe windows  
2986969 Stereoscopic simulation device  
2976764 Polarimeters  
2937563 Fading and dissolving device for motion picture cameras  
2923198 Method and apparatus for examining sheet materials  
2915936 Automobile visor with rotatable light polarizers  
2915937 Visor  
2913586 Photo-electric sine wave generator and system  
2856810 Polarizing viewing visors for vehicles  
2852330 Recording meter  
2846799 Display devices  
2844899 Display device  
2840441 Recording electrical signals with polarized light  
2838864 Optical display device having polarizing means  
2837087 Apparatus for use in treating visual defects  
2825271 Exposure meter device for photography  
2817278 Filter adapter for aerial camera stereo cone  
2793361 Cross-polarized lighting technique for improving operation of cathode-ray tube displays  
2786292 Polarized light display apparatus  
3669526 Title is not available  
3588219 Title is not available  
Matches 201 - 250 out of 252 < 1 2 3 4 5 6 >