| Patents for G03B 21 - Projectors or projection-type viewers; Accessories therefor (41,465) |
|---|
| 03/01/1977 | US4009952 Intermittent rotary motion device |
| 03/01/1977 | US4009950 Motion picture projection apparatus with film feeding speed changing apparatus |
| 03/01/1977 | US4009842 Self-adjusting reel |
| 02/22/1977 | US4009383 Light chute arrangement |
| 02/15/1977 | US4007985 Multiple function recording and readout system |
| 02/08/1977 | US4006980 Microfiche carrier |
| 02/08/1977 | US4006965 Projection screen |
| 02/01/1977 | US4005931 Sealed cassette for optical sound projection |
| 01/25/1977 | US4004746 Cassette magazine for motion-picture films |
| 01/18/1977 | US4003647 Claw mechanism |
| 01/18/1977 | US4003187 Microfilm jacket microfilm feeding device and process |
| 01/11/1977 | US4002408 System and device for overhead projection |
| 01/11/1977 | US4002309 Bobbin for cinematographic films |
| 12/28/1976 | USRE29091 Radiation-redistributive devices |
| 12/28/1976 | US4000367 Apparatus for producing depth effect in two dimensional pictures |
| 12/28/1976 | US3999848 Audio-visual cartridge |
| 12/28/1976 | US3999847 Carrier apparatus for microfilm |
| 12/28/1976 | US3999843 Cartridge-loaded sound motion picture projection |
| 12/21/1976 | US3998535 Resilient frame construction for displaying transparencies |
| 12/21/1976 | US3998522 Screen for exhibiting projected images |
| 12/21/1976 | US3998400 Quick release hub |
| 12/21/1976 | US3998398 Apparatus winding endless bands of film on hubs of spools |
| 12/21/1976 | US3998325 Reel band and method of using same |
| 12/21/1976 | US3997992 Film record card |
| 12/14/1976 | US3997258 Film reader |
| 12/14/1976 | US3997257 Selection for microfiche cartridge |
| 12/14/1976 | US3997256 Microfiche cartridge |
| 12/14/1976 | US3997255 Arcuate optical scanning for N-S movement in a map display navigational apparatus |
| 12/14/1976 | US3997254 Film feed apparatus |
| 12/14/1976 | US3997253 Self contained film strip display apparatus |
| 12/14/1976 | US3996683 Frame for a transparency |
| 12/07/1976 | US3996051 Controlled angle viewing screens by interference techniques |
| 12/07/1976 | US3995956 Microrecord having mirror-images |
| 12/07/1976 | US3995921 Holders for the storage of tape cassettes |
| 12/07/1976 | US3995737 Holders for tape cassettes |
| 11/30/1976 | US3995288 Compact folded mirror camera and projector |
| 11/30/1976 | US3995153 Optical projectors |
| 11/30/1976 | US3994577 Cartridge for audio-visual projectors |
| 11/30/1976 | US3994562 Projection screen |
| 11/30/1976 | US3994551 Holders for tape cassettes |
| 11/30/1976 | US3994550 Holders for tape cassettes |
| 11/23/1976 | US3993404 Self-threading motion picture projector |
| 11/23/1976 | US3993260 Selectively unwinding film reel |
| 11/23/1976 | US3992841 Panel construction and projection screen constructed from such panels |
| 11/16/1976 | US3992305 Shuttle speed control device |
| 11/16/1976 | US3992089 Reader-printer apparatus with multiple supply rolls and charging devices |
| 11/16/1976 | US3992088 Blankette projector |
| 11/16/1976 | US3991955 Automatic film threading device |
| 11/09/1976 | US3990789 Projecting system for automatically loading, threading projecting and rewinding a plurality of films in casettes |
| 10/26/1976 | US3988064 Reader-printer |
| 10/26/1976 | US3988059 Projector |
| 10/26/1976 | US3988057 Prism reflector for optical projector/reader |
| 10/12/1976 | US3985430 Image viewing apparatus |
| 10/05/1976 | US3984180 Cooling system for an audio visual device |
| 09/28/1976 | US3982822 Composite Fresnel lens assembly |
| 09/28/1976 | US3982709 Film core with restrainer |
| 09/21/1976 | US3981581 Drive system for shifting a mirror assembly |
| 09/21/1976 | US3981574 Optical device |
| 09/21/1976 | US3981573 Audio-visual slide projection system |
| 09/21/1976 | US3981572 Mirror follow-up device for a film projector |
| 09/21/1976 | US3981571 Spooling arrangements for endless band material |
| 09/21/1976 | US3981570 Motion picture projector device as audio-visual aid and audio-visual system using the same |
| 09/14/1976 | US3980400 Electromagnetic trigger device in motor-driven camera capable of bulb exposure |
| 09/14/1976 | US3980254 Film strip leader alignment aid |
| 09/14/1976 | US3979966 Clutch device for either intermittent or continuous driving of perforated film |
| 09/07/1976 | US3979160 Compact overhead projector |
| 09/07/1976 | US3979159 Projector |
| 08/31/1976 | US3978500 Process for recording and reproducing images |
| 08/31/1976 | US3977766 Projection screen and apparatus for the fabrication thereof |
| 08/31/1976 | US3977623 Film drive mode change actuator |
| 08/31/1976 | US3977261 Wrap-spring, variable speed drive arrangement |
| 08/24/1976 | US3976837 360° Viewing system |
| 08/24/1976 | US3976359 Instant color movie screen |
| 08/17/1976 | US3975095 Catoptric projection system with a spherical reflecting surface |
| 08/10/1976 | US3973840 Mannequin |
| 08/10/1976 | US3973773 Game apparatus |
| 08/10/1976 | US3973740 Film reel spacer |
| 08/10/1976 | US3973344 Multi-image slide mount |
| 08/03/1976 | US3972604 Sound-recording motion-picture camera |
| 08/03/1976 | US3972485 Endless-roll film cartridge |
| 07/13/1976 | US3968949 Projector tilt mechanism |
| 07/06/1976 | US3967890 Carriage mechanism for microfiche reader |
| 07/06/1976 | US3967887 System for controlling projection of image information recording media |
| 07/06/1976 | US3967788 Endless loop cassette |
| 06/29/1976 | US3967289 Multiple function microfiche and film recording and viewing system |
| 06/29/1976 | US3966474 Method for improving adherence of phosphor-photobinder layer during luminescent-screen making |
| 06/29/1976 | US3966314 Microform card including surface locating structure for elimination of Newton ring color banding and card utilization apparatus therefor |
| 06/29/1976 | US3966313 Forward-reverse projector mechanism |
| 06/29/1976 | US3966301 Transparent screen having intermittent portions for reducing reflection from ambient light |
| 06/29/1976 | US3966134 Cassette for an endless type cinefilm |
| 06/29/1976 | US3965595 Mounting device or book for storing, displaying and handling transparent pictures |
| 06/29/1976 | US3965556 Jacket holder |
| 06/22/1976 | US3964822 Projection screen and process for production thereof |
| 06/15/1976 | US3963937 Information searching device |
| 06/15/1976 | US3963338 Low profile episcopic projector and opaque materials therefor |
| 06/15/1976 | US3963337 Still projector with single-acting compensation device |
| 06/15/1976 | US3963336 Film strip handling apparatus and method |
| 06/15/1976 | US3963287 Storage devices |
| 06/08/1976 | US3961846 Ultra-high reduction microfiche layout and positioning mechanism therefor |
| 06/08/1976 | US3961839 Indoor-outdoor image projection system |