Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 4439022 | Arrangement for the point- and line-wise recording of image information The invention relates to a recording arrangement for image information in the production of printing forms. The laser light modulated with the image content is conducted through a multimode light waveguide into a recording element. There, the modulated la... | 03/27/1984 |
| 4379625 | Operation microscope An operation microscope comprising an objective lens, a pair of magnification power changing lens systems, a pair of eye lenses, a camera body, a first illumination system for illuminating a part of a patient's body for observation, a second illumination ... | 04/12/1983 |
| 4375913 | Snorkel system A snorkel camera system using an 8 mm format camera lens as the prime lens and a 35 mm camera body employing 35 mm film.... | 03/08/1983 |
| 4369767 | Endoscope system An endoscope system comprises an endoscope, a camera unit, and a light source unit. A light splitting unit with a combined prism element for splitting light transmitted through an image guide is attached to an ocular section of the endoscope, and an eyepi... | 01/25/1983 |
| 4344667 | Integrated beam splitter and adjustable light intensity control adapter An integrated beam splitter and adjustable light intensity control adapter including a housing having a plurality of hollowed-out areas with openings from the interior thereof to the housing exterior, a connecting adapter to couple an optical device produ... | 08/17/1982 |
| 4319801 | Image recording system A method and apparatus for recording visual images, for example on a cinematograph or video film. A first lens system is used to produce a real image of a subject against a neutral background, and a conventional recording camera is then used to record the... | 03/16/1982 |
| 4302087 | Microscope attachment camera An attachment camera for microscopes, comprising an apparatus for measuring the brightness of an object detail and markings for sighting at least the detail metering field and the image field of the camera in the observation beam. The metering field marki... | 11/24/1981 |
| 4277130 | Zoom stereomicroscope with taking lens barrel A zoom stereomicroscope with taking lens barrel comprises a binocular observation stereomicroscope, formed by a pair of observation optical subsystems, and an auxiliary optical subsystem which may be used for purpose of photographing or auxiliary observat... | 07/07/1981 |
| 4235507 | Optical system to condense light from a semiconductor laser into a circular spot An optical system has an objective lens for focussing on a dotted information carrying video disc the light emitted from a light source of semiconductor laser whose radiant region has different longitudinal and lateral dimensions, and a coupling lens disp... | 11/25/1980 |
| 4232933 | Optical system of colposcope An optical system of colposcope comprises a pair of independent observation optical sub-systems each having a family of objective lenses including a magnification varying optical sub-system, the magnification varying sub-system in one observation sub-syst... | 11/11/1980 |
| 4210384 | Inverted-design optical microscope The invention contemplates an optical microscope of inverted design and having versatility for application to solve and serve virtually all microscopy problems and needs. The microscope features a particular U-shaped housing with upstanding legs and with ... | 07/01/1980 |
| 4208089 | Intravital microscope and barrel assembly and optical system therefor An intravital microscope and, more particularly, a barrel assembly therefor comprising: a supporting structure; telescopically interconnected upper, intermediate and lower tubes carried by the supporting structure and defining an optical axis, the upper t... | 06/17/1980 |
| 4206966 | Projection microscope with film holder A projection microscope is provided in which light from a light source in the base of the microscope may be directed either up through a specimen mounted on a stage to provide transmitted lighting or obliquely downwardly onto the specimen to provide surfa... | 06/10/1980 |
| 4150885 | Stabilized scene viewing system A stabilized viewing system is disclosed as having a telescope for viewing n object by an observer when the object is remotely located from the observer, a camera for timely photographing a succession of pictures of the object on a film that is processed i... | 04/24/1979 |
| 4143938 | Microscope apparatus with television and film cameras An optical coupler or photo adapter unit has an input port located on a first surface of a housing for receiving a parallel beam of light as may be derived from a microscope or beam splitter. The input port is associated with a first lens for converging t... | 03/13/1979 |
| 4138191 | Operating microscope with two pairs of stereo eye-piece lenses A combined operating microscope and illumination system having a coaxial and/or par focal light source for illumination for precise instrumentation during intraocular and other operating procedures. Stereoscopic view for a surgeon and an assistant is prov... | 02/06/1979 |
| 4134637 | Colposcope with photographic attachment This new version concerns a Colposcope with Photographic-Attachment, wherein the Colposcope is equipped with two side by side oculars, two objective lenses in line with the oculars as well as a light source, reflected into the field of observation and a c... | 01/16/1979 |
| 4057318 | Microscope eye piece focusing apparatus for use in producing sharp photographs Refractive characteristics of the eye or eyes of a microscopist can result in an unfocused image in the film plane of a camera attachment if accommodation occurs in the objective focusing system and an unfocus image can be prevented by providing a separat... | 11/08/1977 |