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Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 7265829 | Reflective optic system for imaging microplate readers A reflective light imaging system for use in high-throughput screening of samples disposed in multiple-well plates. The system can include a set of mirrors and lenses. The first mirror has a central aperture through which light from the object passes. The first mirr... | 09/04/2007 |
| 5394198 | Large-screen display system A folded, magnifying, front projection arrangement for video displays includes a video image source, such as a flat panel display unit out of the user's field of view, projects its image onto a concave mirror also out of the user's field of view. The vide... | 02/28/1995 |
| 5157503 | Near-infinity image display system A near-infinity image display system (10) has a convex faceplate cathode ray tube (12) positioned with respect to a concave mirror (14) such that the cathode ray tube (12) is in front of the center of curvature (16) of the mirror (14) and so that the mirr... | 10/20/1992 |
| 4978217 | Luminous screen projector An apparatus and method for projecting optical images from electronic devices with luminous screens such as television receivers or computer terminal displays includes an image inversion means and a reflective projection means. The image inversion means c... | 12/18/1990 |
| 4776118 | Display device A display device for displaying an image by forming same in a space includes a concave mirror having a reflecting mirror surface of a dark color and a luminous screen for displaying a picture thereon. Light is prevented by a light shielding structure from... | 10/11/1988 |
| 4623223 | Stereo image display using a concave mirror and two contiguous reflecting mirrors Stereo views of a scene are reflected by plano mirrors onto a concave mirror. The plano mirrors are positioned to cause the reflected light from the concave mirror to converge on and cross the optical axis. The concave mirror focuses real images in planar... | 11/18/1986 |
| 4383740 | Infinity image visual display system An infinity image visual display system comprising an input image source, a concave projection mirror, a concave eyepiece mirror and a single path-folding beamsplitter. The projection mirror images the input image source at the focal surface of the eyepie... | 05/17/1983 |
| 4229761 | Illusion transmitter A real time illusion transmitter for transmitting three dimensional illusions of an object comprising a first parabolic mirror for producing a real image of an illuminated object, image detection means disposed in a position to receive said real image and... | 10/21/1980 |
| 4163990 | Color television projection system A system for projecting a color television image is described which comprises a plurality of cathode ray tubes, each of different monochromatic color and each having an image display screen, an optic having an equal plurality of successive reflective surf... | 08/07/1979 |
| 4060835 | Viewing head The invention of this disclosure is a viewing head that packages a spherical mirror, beamsplitter, and cathode ray tube (CRT) in an enclosed container. The process of assembling the viewing head will automatically maintain the spherical mirror, beamsplitt... | 11/29/1977 |
| 3943282 | Projection television apparatus An improved television system and apparatus is provided in which a large size image is projected from the face of a cathode-ray tube viewing screen to a larger display screen. The display screen is mounted in an essentially vertical position on top and to... | 03/09/1976 |
