Television projection system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4208676
SERIAL NO

05870104

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A television projection system for producing an enlarged television image on a projection screen positionally located at a remote point from a standard television set. A tubular housing is mounted adjacent to a cathode ray tube screen of the television set. The tubular housing extends in a longitudinal direction and includes a first end having a lens tube housing displaceably movable with respect to the overall tubular housing. The lens tube housing contains a single plano-convex lens element which is utilized for enlarging the image produced from the cathode ray tube screen onto the remotely located projection screen. A switching element comprising a double throw, double pole switch is mounted on the television set and electrically coupled to the vertical deflection circuit in order to provide a vertically inverted and transversely reversed image. The inverted and reversed image is passed through the plano-convex lens where it is inverted and reversed to provide an appropriate image on the projection screen.

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First Claim

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Patent Owner(s)

  • BERWICK; LEONARD J.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berwick, Leonard J 1215 Clubhouse Rd., Gladwyn, PA 19035 1 12
Besden, Norman M Norristown, PA 1 12
Weiss, Jay I Lafayette Hill, PA 1 12

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