Columbia Heights, MN, United States of America

Howard N Seim

This inventor holds 2 USPTO granted patents. Top assignee: Tennant Company. Active years: 1982-1983.


% Patents Active = 100.0

Average Co-Inventor Count = 3.7

ph-index = 2

Forward Citations = 45(Granted Patents)


Company Filing History:


Years Active: 1982-1983

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2 patents (USPTO):Explore Patents
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