| Patents for G03B 21 - Projectors or projection-type viewers; Accessories therefor (41,465) |
|---|
| 07/12/1988 | US4756604 Liquid crystal device using a Fresnel collimating lens for improving uniformity of display contrast ratio |
| 07/06/1988 | EP0273845A2 Equipment and process for obtaining three-dimensional moving images, that is four-dimensional images in both colour and in black and white |
| 07/06/1988 | EP0273476A1 Image projection system |
| 07/06/1988 | EP0078320B1 Verification device |
| 07/06/1988 | CN87101153A Liquid crystal display projection system having improved contrast |
| 07/05/1988 | US4755869 Image projection/imaging apparatus |
| 07/05/1988 | US4755046 Information projecting apparatus |
| 07/05/1988 | US4754878 Container for shipping and handling feature-length films |
| 07/05/1988 | US4754875 Roll film magazine frame for supporting film receiving film spool and using in a reading device |
| 06/30/1988 | DE3702877C1 Backing for slide films for overhead projectors |
| 06/29/1988 | EP0272807A2 Reduced height transmissive overhead projector |
| 06/28/1988 | US4754306 Microfilm reading and reverse enlarging apparatus |
| 06/23/1988 | DE3642159A1 Hand drive for microfilm reading device |
| 06/21/1988 | US4752124 Micro-film reader |
| 06/21/1988 | US4752116 Transmission type projection screen |
| 06/14/1988 | US4751553 Reader-printer |
| 06/14/1988 | US4751551 For scan/illuminating a document lying in an object plane |
| 06/14/1988 | US4750808 Projection screen |
| 06/14/1988 | US4750807 Curved screen, particularly motion-picture projection screen |
| 06/08/1988 | EP0270308A2 Endless loop transport and storage system |
| 06/08/1988 | EP0270193A2 Light-transmissive screen and method for manufacturing such a screen |
| 06/08/1988 | EP0270169A1 Liquid crystal display projection having improved contrast |
| 06/07/1988 | US4750021 Apparatus for printing from microfilm |
| 06/07/1988 | US4749259 Liquid crystal image projection with multicolor prepolarizing system |
| 06/07/1988 | CA1237566A1 Collapsible panoramic theatre |
| 06/01/1988 | EP0268620A1 Projectable passive liquid crystal display. |
| 05/26/1988 | DE3712038C1 Projector head of an overhead projector |
| 05/25/1988 | EP0267971A1 Information video installation |
| 05/25/1988 | EP0267957A1 Projection screen |
| 05/24/1988 | US4746956 Microfilm printer apparatus and method |
| 05/24/1988 | US4746209 Device for storing and handling slides |
| 05/18/1988 | CN87211957U Colour synthesizing instrument for micrographics |
| 05/17/1988 | US4745489 Image recording apparatus for recording only the image area of a film |
| 05/17/1988 | US4744641 Telephoto lens assembly for overhead projector |
| 05/11/1988 | DE3637778A1 Microfilm image-reading device with positional security of the film image |
| 05/10/1988 | US4743948 Recording and projecting apparatus |
| 05/10/1988 | US4743109 Slide projector with automatic slide warpage compensation |
| 05/10/1988 | US4742631 Transparency mounting device and method |
| 05/03/1988 | US4741613 Reduced height transmissive overhead projector |
| 04/27/1988 | EP0264518A1 Package for visualizing photographic pictures |
| 04/27/1988 | CN87208819U Projector film gate rapid-changing apparatus |
| 04/21/1988 | DE3635433A1 Office or domestic furniture with a built-in media wall |
| 04/21/1988 | DE3634293A1 Support for transparent originals |
| 04/19/1988 | USRE32648 Opaque projector |
| 04/19/1988 | US4739368 Reader-printer apparatus and method for variable length copying of information on a standard sheet length |
| 04/19/1988 | US4738525 Transparency film assemblage and roller assembly for use therewith |
| 04/19/1988 | US4738523 Retrieval control apparatus for microfilm reader |
| 04/19/1988 | US4738040 Slide frame and method of inserting a film transparency in a slide frame |
| 04/14/1988 | DE3634485A1 Prism for spectral, distorted photographs and projections |
| 04/14/1988 | DE3633332A1 Optische einrichtung zur projektion von fluessigkristallanzeigen Optical device for projection of fluessigkristallanzeigen |
| 04/13/1988 | CN87207214U Hinging apparatus of transmissive projector |
| 04/07/1988 | WO1988002501A1 Optical device for projecting liquid crystal displays |
| 04/05/1988 | US4736224 Method of and apparatus for determining frame position |
| 04/05/1988 | US4735500 Overhead projector |
| 04/05/1988 | US4735499 Film carrier support mechanism for film projector |
| 03/23/1988 | EP0260758A2 Rear projection screen with improved luminance uniformity |
| 03/22/1988 | US4732468 Registry device for transparencies for overhead projector |
| 03/22/1988 | US4732455 Lens support |
| 03/22/1988 | US4732441 Oriented-reflection reflective mirror screen |
| 03/22/1988 | US4732342 Drive assembly for microfilm cartridges |
| 03/22/1988 | CA1234286A1 Target image presentation system |
| 03/16/1988 | EP0259310A1 Method and apparatus for displaying a three dimensional visual image |
| 03/15/1988 | US4730919 Slide viewer |
| 03/15/1988 | US4730897 Projection screen having high resolution and good mechanical stability |
| 03/10/1988 | DE3629788A1 Slide projector |
| 03/09/1988 | EP0259058A2 Projection-type multi-colour liquid crystal display device |
| 03/09/1988 | EP0258883A1 Image projection device utilizing an oil film |
| 03/09/1988 | EP0258858A2 Overhead projector |
| 03/09/1988 | EP0258713A2 Slide magazine |
| 03/09/1988 | CN87207220U Image-moving accessories for slide projector |
| 03/08/1988 | US4730218 For projecting an image from a lecturer to an audience |
| 03/08/1988 | US4729631 Rear projection screen |
| 03/03/1988 | DE3629728A1 Illuminating system for projectors |
| 03/03/1988 | DE3629337A1 Projection device |
| 03/01/1988 | US4728184 Foldable transparency enlarger for overhead projector |
| 02/25/1988 | DE3627646A1 Device for transmitted-light projection |
| 02/24/1988 | EP0256910A1 Portable graphical reproduction apparatus |
| 02/24/1988 | EP0256582A1 Method of producing a phosphor screen for a colour cathode ray tube |
| 02/24/1988 | CN87205731U Writing and shadowless indicating projector |
| 02/18/1988 | DE3627740A1 Overhead projector |
| 02/18/1988 | DE3626632A1 Holder for film frames (images) |
| 02/17/1988 | CN87104570A Slide projector |
| 02/16/1988 | US4725448 Application of electrically-charged light-absorbing particles to a lenticular screen |
| 02/16/1988 | US4725134 Rear projection apparatus |
| 02/16/1988 | US4724956 Information recording carrier-holding sheet |
| 02/11/1988 | WO1988001068A1 Liquid crystal motion picture projector with memory |
| 02/11/1988 | DE3641336C1 Glassless slide frame |
| 02/11/1988 | DE3626146A1 Transparent liquid-crystal display |
| 02/09/1988 | US4723655 Compact film carrier |
| 02/03/1988 | EP0255391A2 Image mask for microfiche |
| 02/03/1988 | EP0255212A2 Method and apparatus for simultaneously inserting planar articles into a file sheet |
| 02/03/1988 | EP0254783A1 Digital screen display apparatus |
| 02/02/1988 | US4722593 Liquid-crystal projector with light beam reduction lens array for improved brightness of image outer portions |
| 01/28/1988 | WO1988000722A1 Portable graphic reproduction bank |
| 01/27/1988 | EP0254199A2 Transmission type projection screen |
| 01/27/1988 | CN87103960A Bulk diffuser for a projection screen |
| 01/26/1988 | US4721380 Portable opaque projector |
| 01/26/1988 | US4721361 Rear projection image viewing system |
| 01/21/1988 | DE3624132A1 Locking device for a film trap (gate) of a microfilm reader |
| 01/21/1988 | DE3623211A1 Microfilm projector |