| Patents for G03B 21 - Projectors or projection-type viewers; Accessories therefor (41,465) |
|---|
| 07/27/1989 | WO1989006825A1 An arrangement of a projection screen |
| 07/27/1989 | DE3843061A1 Microfilm aperture card, with stuck-in aperture film image |
| 07/25/1989 | US4851924 Color recorder overhead projector with color recorder |
| 07/18/1989 | US4848576 Film jacket for flat articles, particularly slide frames |
| 07/18/1989 | CA1257492A1 Projection screen for two- and three-dimensional projections |
| 07/13/1989 | WO1989006448A1 Light socket soft start and power interrupt assembly |
| 07/13/1989 | WO1989006417A1 An improved video display system |
| 07/13/1989 | WO1989006081A3 System and method for producing a flicker-free video image |
| 07/11/1989 | US4846694 Computer controlled, overhead projector display |
| 07/11/1989 | US4846570 Overhead projector |
| 07/11/1989 | US4846569 Image projecting system |
| 07/11/1989 | US4846366 Container and closure |
| 07/11/1989 | CA1257372A1 Liquid crystal projector and method |
| 07/11/1989 | CA1257124A1 Projection lens system |
| 07/06/1989 | DE3744002A1 Method and device for automatically changing the film strips, spliced from a multiplicity of individual films, in a roller copier |
| 07/05/1989 | EP0323110A2 Projection screen device |
| 07/05/1989 | CN1004728B Back projection screen |
| 07/04/1989 | US4844367 Endless loop transport and storage system |
| 06/29/1989 | WO1989006081A2 System and method for producing a flicker-free video image |
| 06/29/1989 | WO1989005682A1 Theatrical system |
| 06/28/1989 | EP0322088A2 Glass stages for overhead projectors and an overhead type projector system containing such glass stages |
| 06/28/1989 | EP0322069A1 Light valve projection system with improved illumination |
| 06/28/1989 | CN1004656B Rear-projection screen |
| 06/27/1989 | US4843432 Image recording apparatus |
| 06/27/1989 | US4842402 Projection and viewing apparatus |
| 06/20/1989 | US4841317 Web handling device |
| 06/15/1989 | DE3740915A1 Adjusting device for an objective head of an overhead projector |
| 06/14/1989 | EP0320038A1 Core for film spool |
| 06/13/1989 | US4839825 Frame positioning method |
| 06/13/1989 | US4839731 Color overhead projector |
| 06/13/1989 | US4838686 Projector apparatus |
| 06/08/1989 | DE3810815C1 Film advancement (transport) device having a film advancement sprocket wheel |
| 06/07/1989 | CN2039035U Dual-purpose change-over arrangement for projector |
| 06/06/1989 | US4836463 Endless loop transport and storage system |
| 06/06/1989 | US4836377 Cover clip for photographic slides |
| 06/01/1989 | WO1989004993A1 Enlarging photographic printer |
| 05/30/1989 | US4835577 Negative/positive microfilm discriminating system |
| 05/30/1989 | US4834315 Apparatus for grounding cassette |
| 05/30/1989 | CA1254780A1 Accessory for use with an overhead projector |
| 05/24/1989 | EP0317196A2 Endless loop transport and storage system |
| 05/24/1989 | DE3739092A1 Method for coating a light-reflecting surface |
| 05/24/1989 | DE3737478A1 Information and lecture magazine |
| 05/24/1989 | CN1033115A Positive image superminiature multifunctional projector |
| 05/23/1989 | US4832461 Projection-type multi-color liquid crystal display device |
| 05/16/1989 | US4830484 Image projection apparatus |
| 05/09/1989 | US4829327 Overhead projector |
| 05/09/1989 | US4828111 Container for holding packages of cover glass and individual glass slides |
| 05/09/1989 | CA1253725A1 Rear projection screen |
| 05/03/1989 | EP0313640A1 Improved optical system for full color liquid crystal light valve image projection. |
| 05/03/1989 | CN2037076U Slide projector accessories with animated effect |
| 05/02/1989 | US4826102 Apparatus for feed-out of leading film end from roll film cartridge |
| 04/27/1989 | DE3810814C1 Film advancement (transport) device having a film advancement sprocket wheel driven by a drive motor |
| 04/26/1989 | EP0313395A2 A projection-type color display apparatus |
| 04/25/1989 | US4825387 On a microfiche |
| 04/25/1989 | US4825243 Film image projecting apparatus for handling a roll film containing a plurality of rows of frames |
| 04/25/1989 | US4824239 Reflection-type overhead projector |
| 04/25/1989 | US4824227 Optimum riser angle for fresnel lenses in projection screens |
| 04/20/1989 | WO1989003188A1 Device for forming composite images to review ornamenting collections |
| 04/19/1989 | EP0311676A1 Apparatus for printing from microfilm. |
| 04/19/1989 | CN2036284U Plane rotary woved foldable mechanism for projector |
| 04/19/1989 | CN1032461A Method of manufacturing master for the fabrication of projection screens and tool for carrying out the method |
| 04/12/1989 | EP0311189A1 Front projection screen |
| 04/12/1989 | EP0311182A1 Method of manufacturing a master for the fabrication of projection screens and tool for carrying out the method |
| 04/12/1989 | EP0133440B1 Projection television receiver |
| 04/11/1989 | US4821067 Microfilm reader-printer having an image fermation device |
| 04/11/1989 | US4819794 Film spool storage case |
| 04/05/1989 | CN2035493U Monitor for film image |
| 04/04/1989 | US4818098 Apparatus and method of forming and projecting high precision optical images |
| 04/04/1989 | US4818074 Projection device for irradiating a light to a display device and optically magnifying and projecting a reflection light therefrom |
| 03/29/1989 | EP0308570A1 Improved boxlight for projection photoreproduction |
| 03/29/1989 | CN2035099U Micro-compwter controlled slide projectors large screen display equipment |
| 03/23/1989 | DE3730933A1 Device for winding up tape material (strip material), in particular film strip, onto a reel (coil) |
| 03/22/1989 | CN2034704U Vm slide projector |
| 03/22/1989 | CN2034697U Compensation type reflector for slide projector |
| 03/22/1989 | CN1031898A Stereoscopic screen |
| 03/21/1989 | US4813780 Image mask for microfilm roll handler |
| 03/15/1989 | EP0181382B1 Magazine projection apparatus |
| 03/08/1989 | CN1031609A Display system utilizing light transmitting screen and method of manufacturing same |
| 03/08/1989 | CN1031608A Projection screen having high resolution and good mechanical stability |
| 03/07/1989 | US4811110 Reflection-type overhead projector |
| 03/07/1989 | US4810087 Portable microfilm reader |
| 03/07/1989 | US4810086 Portable microfilm reader |
| 03/07/1989 | US4809923 Light-tight film reel |
| 03/07/1989 | CA1250773A1 Projection screen |
| 03/01/1989 | EP0305009A2 Improved one-piece projection screen |
| 03/01/1989 | EP0304800A2 Overhead projector |
| 02/28/1989 | US4809064 Enlarging photographic printer |
| 02/21/1989 | US4807040 Signal processing filter for an image projection device utilizing an oil film |
| 02/21/1989 | US4807039 Motion picture film transport |
| 02/21/1989 | US4805895 Image forming apparatus and method |
| 02/15/1989 | CN2032730U Multi-purpose apparatus for enlargement, slide projection and projecting |
| 02/15/1989 | CN2032729U Projection screen rolling device |
| 02/14/1989 | US4805087 Selective microfiche display equipment |
| 02/09/1989 | WO1989001185A1 Projection screen |
| 02/07/1989 | US4802734 Cold static balloons |
| 01/31/1989 | US4801016 Planar element storage and display apparatus |
| 01/31/1989 | CA1249464A1 Motion picture system |
| 01/26/1989 | WO1989000715A1 Catadioptric projection lantern |
| 01/26/1989 | DE3723181A1 A liquid-crystal demonstration device to be placed onto the demonstration surface of an overhead projector |
| 01/24/1989 | US4800413 Reader printer |