| Patents for G03B 21 - Projectors or projection-type viewers; Accessories therefor (41,465) |
|---|
| 04/21/1981 | CA1099547A1 Video image projection apparatus |
| 04/08/1981 | EP0026177A1 Projector. |
| 04/07/1981 | US4260247 Instant print slide projector |
| 04/07/1981 | US4260246 Projection device |
| 04/07/1981 | US4259802 Picture viewer |
| 04/07/1981 | CA1098987A1 Film thickness detector |
| 04/07/1981 | CA1098743A1 Process and device for viewing adjacent microfilm frames in series |
| 04/02/1981 | WO1981000917A1 Lens mounting system |
| 03/31/1981 | US4258986 Electric books and microfilm structures and the production thereof for use in electric books |
| 03/31/1981 | US4258531 Process and device for viewing adjacent microfilm frames in series |
| 03/31/1981 | US4258478 Fashion previewing system |
| 03/31/1981 | CA1098356A1 Self-developing motion picture viewer having controlled film imbibition |
| 03/31/1981 | CA1098348A1 Microfilm jacket |
| 03/31/1981 | CA1098347A1 Microprocessor controlled roll film microfiche reader |
| 03/24/1981 | US4257695 Film projection gate |
| 03/24/1981 | US4257694 Projection system |
| 03/24/1981 | CA1098199A1 Logic system for photographic film strip handling apparatus |
| 03/24/1981 | CA1097972A1 Fluid applicator doctor blade with an inclined comb- like surface |
| 03/24/1981 | CA1097961A1 Mirror mechanism for a film projector |
| 03/24/1981 | CA1097960A1 Portable microfiche reader with foldup lens and mirror assembly |
| 03/24/1981 | CA1097959A1 Cassette receiving well structure for photographic viewing apparatus |
| 03/19/1981 | WO1981000770A1 Sheeting useful as a projection screen |
| 03/10/1981 | US4255026 Viewer |
| 03/10/1981 | US4254917 Reel for tape cassette |
| 03/10/1981 | US4254880 Rack for storing of slides |
| 03/10/1981 | CA1097295A1 Film web handling mechanism |
| 03/10/1981 | CA1097280A1 Process and device for inserting a microfilm into a microfilm jacket in series |
| 03/03/1981 | US4253749 Electronic theater projector |
| 02/24/1981 | CA1096212A1 Marker projector system for fabrics |
| 02/18/1981 | EP0023947A1 Slide projector |
| 02/17/1981 | US4250644 Hand held microfilm reader |
| 02/17/1981 | US4250641 Pre-closed slide mount |
| 02/10/1981 | US4249820 Registration control system for copy machine |
| 02/10/1981 | CA1095299A1 Film projection system |
| 02/10/1981 | CA1095298A1 Optical structure for microfiche reader |
| 02/03/1981 | US4248508 Projection mask storage and carrier system |
| 01/27/1981 | US4247197 Film positioning device for microform printing system |
| 01/27/1981 | US4247185 Microform reader |
| 01/27/1981 | US4247184 Magnetic indexing system for microfilm reader |
| 01/27/1981 | US4247183 Microfilm cassette |
| 01/27/1981 | US4247181 Kaleidoscopic projector |
| 01/27/1981 | US4247058 Axial flow continuous loop film storage spool apparatus |
| 01/27/1981 | CA1094365A1 X-ray film mounts |
| 01/22/1981 | WO1981000155A1 Gravity-feed rotary tray slide projector |
| 01/20/1981 | US4245898 Microfiche reader |
| 01/20/1981 | US4245417 Picture viewer |
| 01/20/1981 | CA1094036A1 Tape reel |
| 01/20/1981 | CA1093871A1 Optical system for visual analysis of two assemblies by superimposing of an image onto an assembly |
| 01/13/1981 | US4244642 Aperture card reader with automatic and manual card feed |
| 01/13/1981 | US4244641 Microfilm reader |
| 01/13/1981 | CA1093525A1 Reel holding hub assembly |
| 01/07/1981 | EP0021363A1 Process for controlling the exposure of a microfilm viewing and reproducing device, and such a device for carrying out the process |
| 01/07/1981 | EP0021047A1 Stand for projection screens |
| 01/07/1981 | EP0020414A1 Device for presenting opaque images, for example photos |
| 01/06/1981 | US4243307 Image projection system |
| 01/06/1981 | US4242819 Microfiche carrier assembly |
| 12/30/1980 | US4242000 Arrangement at screens intended to give rise to a moire pattern |
| 12/30/1980 | US4241980 Beam emission control means |
| 12/30/1980 | US4241528 Picture viewer |
| 12/23/1980 | US4241365 Magnetic video recording and reproducing device |
| 12/23/1980 | US4240722 Information data microfilm projector for vehicles |
| 12/23/1980 | US4240721 Cooking with recipes through improved viewing machine or wall screen projection |
| 12/16/1980 | US4238899 Picture viewer |
| 12/16/1980 | US4238898 Picture viewer |
| 12/10/1980 | EP0020168A1 Photographic copying device |
| 12/10/1980 | EP0019696A1 Microfiche storage device |
| 12/02/1980 | US4236680 Take-up reel |
| 12/02/1980 | US4236635 Filing sheet for microscope slides |
| 11/26/1980 | EP0019273A1 Film projection and viewing apparatus with reel supports |
| 11/26/1980 | EP0019243A1 Stand for projection screens |
| 11/26/1980 | EP0019051A1 Slide frame with profiled edge sections |
| 11/26/1980 | EP0019050A1 Slide frame with a profiled edge section |
| 11/25/1980 | US4235545 Microfiche camera with cooperating shutter and light shield |
| 11/25/1980 | US4235536 Microfilm reader |
| 11/25/1980 | US4235513 High-gain projection screen |
| 11/25/1980 | CA1090178A1 Optical image viewing apparatus with rotating viewing screen |
| 11/18/1980 | US4234140 Magnetic tape cassette drive system |
| 11/11/1980 | US4232953 Gravity-feed rotary tray slide projector |
| 11/11/1980 | US4232939 Screen with high luminance and wide angle |
| 11/11/1980 | CA1089266A1 Apparatus for facilitating ready insertion and removal of cassettes from wells |
| 11/11/1980 | CA1089265A1 Viewing apparatus for microdocuments |
| 11/04/1980 | US4231214 Device for inserting a microfilm into microfilm jackets in series |
| 11/04/1980 | CA1088967A1 Feed shuttle mechanism for motion picture film strips |
| 10/29/1980 | EP0017904A1 Projection copying apparatus |
| 10/21/1980 | US4229085 Film reader |
| 10/21/1980 | US4229072 Color display system using magneto-optic screen having a dispersive Faraday coefficient |
| 10/21/1980 | CA1088143A1 Reader-printer apparatus |
| 10/15/1980 | EP0017385A1 Film projection gate |
| 10/15/1980 | EP0017026A1 Multiple lens support in a microfilm reader |
| 10/14/1980 | US4227782 Card motion picture projection system |
| 10/14/1980 | US4227781 Projection lamp control |
| 10/07/1980 | US4226512 Film projection system |
| 10/07/1980 | US4226382 Catching and holding the terminal end of a tape in a tape reel |
| 10/07/1980 | CA1087316A1 Information retrieval system having ramp motor control |
| 10/01/1980 | EP0016407A1 Transparent foil for overhead projection |
| 09/30/1980 | US4225097 Film carrying roller |
| 09/30/1980 | US4225044 Slide frames and a slide magazine for storing such slide frames |
| 09/30/1980 | CA1086702A1 Reel for tape |
| 09/23/1980 | US4223986 Surface illuminator |
| 09/09/1980 | US4221473 Image expander for rear-screen projectors |