Reproducing stylus and method of making same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4521877
SERIAL NO

06463313

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A reproducing stylus for a record having a sound groove, said stylus formed by removing front and back portions of its contact area with the sound groove to obtain an edge line portion having an orientation perpendicular to the direction of record travel and a width d where the effective radius of curvature of the stylus tip is approximately 1/2 d. The edge line portion is formed by reciprocally moving and grinding the tip on a grinding groove.

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Patent Owner(s)

Patent OwnerAddress
NAMIKI PRECISION JEWEL CO LTDTOKYO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Shimamoto, Hiroshi Niiza, JP 8 150

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