Patents
Sitemap › G03 - Photography; Cinematography; Analogous techniques using waves other than optical waves; Electrography; Holography › G03B - Apparatus or arrangements for taking photographs or for projecting or viewing them; Apparatus or arrangements employing analogous techniques using waves other than optical waves; Accessories therefor › G03B 21 - Projectors or projection-type viewers; Accessories therefor
Patents for G03B 21 - Projectors or projection-type viewers; Accessories therefor (41,465)
01/1982
01/06/1982EP0043114A1 Projection lamp comprising single ended arc discharge lamp and an interference filter
01/05/1982US4309073 Translucent screen assembly
12/1981
12/29/1981US4307941 Adjustable objective holder
12/29/1981CA1115363A1 Rotary electric receptacle
12/23/1981EP0042125A1 Peel-off mount for X-ray film strips
12/22/1981US4306782 Removable remote control unit for a slide projector
12/16/1981EP0041888A1 Process and device for retrieving microfiche information
12/16/1981EP0041527A1 Device for mounting lens lamps, particularly on the frame of optical systems
12/09/1981EP0041436A1 Microfiche reader with automatic selection using a microprocessor
12/09/1981EP0041211A1 Projekting system for diapositives
12/09/1981EP0041107A1 Binocular ophthalmoscope
12/01/1981US4303784 Production of polystyrene reflector beads
12/01/1981US4303161 Handling means for use in handling planar objects
12/01/1981CA1113619A1 Interactive projection display system
11/1981
11/24/1981US4302082 Device for the insertion of microfiche cards into reading instruments
11/24/1981US4301917 Means for holding flexible sheets
11/24/1981CA1113187A1 Data storage and retrieval system
11/18/1981EP0039768A2 Projection screen device
11/03/1981US4298271 Scanning and projecting device
11/03/1981US4298246 Reflection type screen
11/03/1981US4298124 Slide programming device
11/03/1981CA1111686A1 Lamp assembly and power module for fanless microfiche reader
10/1981
10/29/1981WO1981003075A1 Optical rollfiche reader
10/28/1981EP0038406A2 Control means for a film strip
10/27/1981US4297009 Image storage and display
10/27/1981US4297001 Projection screen and method for making same
10/27/1981US4296857 Protective band for photosensitive film on spools
10/20/1981US4296150 Acid resistant dye for dark tone background, discharging to a bright tone contrast
10/20/1981US4295906 Method for producing a motion picture screen
10/20/1981US4295589 Device for feeding web with temperature compensating means
10/14/1981EP0037739A1 Light-transmitting type screen for a color television projector
10/13/1981US4294418 Tape cartridge
10/07/1981EP0036882A1 Lens mounting system.
10/06/1981US4293108 Take-up device speed controller using magnetic sensing means
10/06/1981CA1110360A2 Microprocessor controlled roll film microfiche reader
09/1981
09/29/1981US4291954 Audiovisual system with improved moving light pointer
09/22/1981CA1109304A1 Arrangement of screens intended to give rise to a moire pattern
09/17/1981WO1981002639A1 An envelope for transparencies for overhead projectors and like projecting apparatuses
09/15/1981US4290097 High-pressure discharge lamp and reflector combination
09/15/1981US4289396 Microfiche reader printer with interchangeable carriages
09/15/1981US4289377 Projecting apparatus
09/09/1981EP0035410A1 Reader-printer and method of producing a permanent copy therein
09/09/1981EP0035033A1 Sheeting useful as a projection screen.
09/08/1981CA1108450A1 Method of making image projection screen
09/08/1981CA1108446A1 Viewing carrier for photographic sheets
09/01/1981US4287564 Method of correcting for misalignment of microfiche frames
08/1981
08/26/1981EP0034218A1 Projector for films, slides or the like
08/25/1981CA1107807A1 Microfilm adaption unit for photocopier machines
08/25/1981CA1107546A1 Reproducing of interspersed motion-picture scenes and still shots
08/19/1981EP0034014A1 Storage apparatus for photographic microform recordings
08/18/1981CA1107385A1 Projector
08/18/1981CA1107104A1 Overlay device for use with an illuminated transparency viewer
08/18/1981CA1107103A1 Viewer for photographic prints
08/18/1981CA1107102A1 Viewer for photographic prints
08/12/1981EP0033360A1 Hand-held transparency projector with simple advance mechanism
08/11/1981US4283658 Projection lamp control arrangement
08/11/1981US4283136 Microfiche reader printer having multi-format capabilities
08/11/1981CA1106662A1 Viewer for photographic prints
08/05/1981EP0033107A1 Objective changing device in a microfilm reader
08/04/1981CA1106214A1 Viewer for photographic prints
07/1981
07/23/1981WO1981002068A1 Support for an interchangeable reflector lamp,particularly for a slide projector
07/23/1981WO1981001996A1 Protective band for photosensitive film on spools
07/22/1981EP0032438A2 Image storage and display
07/21/1981US4279503 Microfiche system
07/21/1981CA1105302A1 Programmable viewing system for processing and viewing cassette contained photographic film strips
07/15/1981EP0031874A1 Electrical installation arrangement
07/14/1981US4278346 Reading and printing apparatus
07/14/1981US4278334 Illumination control apparatus for projection device
07/08/1981EP0031404A1 Remote control circuit
07/08/1981EP0031363A1 Gravity-feed rotary tray slide projector
07/07/1981US4277153 X-ray microfilm reader
07/07/1981US4277152 Controls for synchronizing audio signals with film advancement in a projector
07/07/1981US4277136 Reflector construction
06/1981
06/25/1981WO1981001753A1 Device for mounting lens lamps,particularly on the frame of optical systems
06/25/1981WO1981001752A1 Apparatus for projecting films,slides etc.
06/25/1981WO1981001750A1 Film guide,particularly for projection apparatus,viewer,enlargement apparatus,etc.
06/23/1981US4274605 Reel technology
06/23/1981CA1103493A1 Microfiche carrier assembly
06/23/1981CA1103492A1 Compact optical viewer for microfiche or cassette
06/16/1981US4273427 Apparatus for storing and randomly accessing planar film records
06/09/1981CA1102771A1 Photographic film drive system employing inertia dumper/energy dissipater
06/09/1981CA1102515A1 Ultrasonic film cleaning apparatus
06/02/1981US4270850 Microimage storage and retrieval apparatus
06/02/1981US4270404 X-Y Movement mechanism
05/1981
05/26/1981CA1101709A1 Method and apparatus for loading film transparencies into slide mounts and improved pre-closed slide mounts therefor
05/26/1981CA1101708A1 Continuous motion cinematograph film system
05/19/1981US4268118 Sheeting useful as a projection screen
05/13/1981EP0028283A1 Device for the ordered storage of photographs, and case therefor
05/12/1981US4266855 Quick change lens system
05/12/1981US4266834 Filing arrangement
05/12/1981US4266738 Tape reel
05/06/1981EP0027969A1 Magazine for microfilm and microfilm-reading device suited therefor
05/05/1981US4265142 Manual and power motivated drive means
04/1981
04/30/1981WO1981001214A1 Segmented screen construction
04/28/1981US4264168 Projection device, especially for photography, motion pictures and television
04/28/1981US4264158 Picture changer for large-scale picture projector
04/28/1981CA1099966A1 Magazine loading of photographic slides
04/22/1981EP0027287A1 Rear projection screen and method for the production thereof
04/21/1981US4263000 Method of, and apparatus for photographically making positive pictures
04/21/1981CA1099548A1 Motion picture projector system
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