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United States of America Patent

PATENT NO 5034893
SERIAL NO

07335623

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Vehicle parameters are sensed at each of a plurality of engine speeds and are used to calculate different type vehicle performance signals, which are displayed together in a rectangular coordinate system having an engine speed axis and axes perpendicular thereto, one for each different type of vehicle performance signal, each performance signal being displayed in alphanumeric characters and connected with line segments, to identify the type of performance signal.

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Patent Owner(s)

  • ENVIROTEST SYSTEMS HOLDINGS CORP.;GOVERNOR AND COMPANY OF THE BANK OF SCOTLAND, AS AGENT

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fisher, James A Tucson, AZ 17 284

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