Elmhurst, IL, United States of America

John B Portzer

This inventor holds 3 USPTO granted patents. Top assignee: Ag Communication Systems Corporation. Active years: 1991-1993.


% Patents Active = 100.0

Average Co-Inventor Count = 2.3

ph-index = 3

Forward Citations = 21(Granted Patents)


Company Filing History:


Years Active: 1991-1993

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3 patents (USPTO):Explore Patents
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