...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7887182 | Sports glasses with lens adapter for semi-rimless construction A sports glasses construction includes an eyeglass frame for semi-rimless lenses having a pair of receivers for receiving a first pair of selectively removable lenses or lens adapter frames. A pair of lens adapter frames has respective upper connection members sized... | 02/15/2011 |
| 7510279 | Sports glasses lens adapter A sports glasses construction includes a frame for semi-rimless lenses having a pair of channels for receiving a first pair of selectively removable lenses of a first radius of curvature, and a pair of lens adapters having respective upper rib members sized and shap... | 03/31/2009 |
| 7249842 | Safety eyewear with snap-in replaceable lens and over-molded bumpers and decorative trim The safety eyewear includes a one-piece molded lens frame, and left and right temple bar assemblies. The one-piece lens frame includes a brow bar portion, a central bridge portion, a nose piece portion, and left and right lens frame eyewires that cooperate with the ... | 07/31/2007 |
| 7237892 | Temple bar with ball and socket hinge and method of making same A novel hinge assembly for eyeglasses is provided wherein a first structural member for the hinge structure is formed in a first molding step and a second structural member of the hinge structure is formed directly over a portion of the first structural member in a ... | 07/03/2007 |
| 7175275 | Multipurpose eyeglass device A pair of spectacles includes a main frame having a magnetic bridge piece. An auxiliary inner frame is secured by a magnetic member to the bridge piece and an outer auxiliary lens is similarly secured by a magnet to the bridge piece and at lateral locations onto edg... | 02/13/2007 |
| 7172282 | Detachable eyeglasses A pair of detachable eyeglasses has a frame, a bridge and two integral lenses. The frame has a skeleton and two side bars formed at two ends of the skeleton. A lug is formed in a middle portion of the frame and multiple joint members are symmetrically provided in re... | 02/06/2007 |
| 7070272 | Detachable eyeglass frame and aviator lens arrangement A detachable eyeglass frame and aviator lens arrangement for eyeglasses is disclosed to include an eyeglass frame having two aviator lens positioning structures, each aviator lens positioning structure having a first magnet disposed at one lateral side and an aviato... | 07/04/2006 |
| 7011404 | Safety glasses with pivoting interchangeable single-lens Eyewear having an interchangeable single lens, that can be replaced quickly and easily, is provided. The eyewear is particularly suitable for use as safety eyeglasses. The eyewear includes a unitary frame structure having an inner and outer surface. The frame includ... | 03/14/2006 |
| 6969172 | Safety glasses with flexible frame and interchangeable dual-lenses Safety eyewear (10) having interchangeable lens(es) (28,30) is provided. To provide for interchange of the lenses (28,30) in the frame (12), upper and lower frame members (32,34) are molded from a harder, more rigid plastic while l... | 11/29/2005 |
| 6959988 | Eyewear having detachable lens retaining member Eyewear is provided with an exchangeable lens retaining member which is removably attached to a lens to form a lens unit. The lens unit is detachably secured to the main frame of the eyewear such that the lens unit extends downwardly from the main frame. At least a ... | 11/01/2005 |
| 6926404 | Spectacles with interchangeable lenses The invention concerns eyewear with means for interchanging a lens including non-rectilinear assembly zones provided on lateral edges of the lens, zones for receiving the assembly zones, one of which is formed at least partly by a piece mobile relative to the frame,... | 08/09/2005 |
| 6908193 | Eyewear The eyewear described comprises a unitary lens consisting of a pair of transparent sight regions and of a bridging region therebetween and a lens engaging brow frame engaging the upper edge of the lens and having its opposite ends extending through openings provided... | 06/21/2005 |
| 6585370 | Removable lens frame mounted to an eyewear platform Eyeglasses having a lens frame removably attached to an eyewear platform using different attachment devices such as magnets, clips, or other attachment devices that provide effective resistance from said lens frame from becoming involuntarily detached fro... | 07/01/2003 |
| 6502938 | Attachment structure of a frame body relative to a front portion There is provided an attachment structure of a frame body relative to a front portion capable of attaching the frame body to the front portion with a simple construction, and also there is provided an attachment structure of a frame body relative to a fro... | 01/07/2003 |
| 6132041 | Eyeglasses with two separate snap fitted lenses A pair of eyeglasses includes a frame having two curved lens-engaging strips, each of which has an inner surface that is formed with an open-ended longitudinal slot. Each of the strips further has two ends that define a gap therebetween, and a downwardly ... | 10/17/2000 |
| 6070978 | Spectacles Spectacles with an improved fastening of spectacle lenses on a rimless spectacle mount have a spectacle lens which is secured to the spectacle mount with at least one filament which partially encloses the periphery of the spectacle lens. The spectacle len... | 06/06/2000 |
| 5926249 | Pair of glasses A pair of glasses including two outer butts, two inner butts, a bridge and two movable rim assemblies. Each outer butt has two stopper plates each being formed with a longitudinal channel in which the movable rim assembly is inserted. Each inner butt also... | 07/20/1999 |
| 5903331 | Eyeglasses comprising frame unit and snap fitted lens unit A pair of eyeglasses includes a frame unit and a lens unit. The frame unit has a downwardly flaring projection protruding integrally and downwardly from a middle portion thereof, and two constricted slots which are located on two sides of the projection a... | 05/11/1999 |
| 5592242 | Eyeglass connection device Sunglasses include a lens which is replaceable with an alternative one at any time, and provides such sunglasses in which frames thereof can be easily attached to and detached from the lens, and the frames can be held stably on the lens while attached the... | 01/07/1997 |
| 5587747 | Interchangeable eyeglass lens system An interchangeable eyeglass lens system for sunglasses and other eyewear so that more than one pair of lenses can be used with a particular frame. Lenses particularly adapted for interchangeability and having concavities on the lens periphery for engaging... | 12/24/1996 |
| 5457503 | Spectacles with high efficient angle adjustment The pair of spectacles includes an eye-protecting piece with a transparent plate and two side plates, and a U-shaped frame member. Each of the side plates has an upper section with a top edge, an elongated notch extending downwardly from the top edge, and... | 10/10/1995 |
| 5357292 | Eyeglasses with adjustable temple inclination In glasses, in particular industrial safety or sports glasses with an integral continuous sight piece and with inclination-adjustable side pieces articulated on a frame piece it is provided for the purpose of defined and reliable inclination-adjustment ac... | 10/18/1994 |
| 4187007 | Eyeglass construction An eyeglass construction in which the separate lenses thereof are directly attached to a laterally extending brow bar includes a pair of rearwardly extending threaded posts adapted to pass through spaced openings in the upper peripheral portion of each le... | 02/05/1980 |
| 4045131 | Spectacle frames Means in the shape and configuration of letters of the alphabet, words or animals adapted to be affixed to form eyeglass frames as an ornamental piece.... | 08/30/1977 |